I listen to him on the John Ankerberg Show. He held the degree in languages. So not a fraud. He spoken a language he was fluent in. So not a liar.
He went to that church because it was known to be pulling stunts like this.
In the capacity I was serving in that the time I was invited to a Pentecostal church as a special guest.
They prayed in tongues over me, laid on hands and even had a woman who was known for slain in the spirit, a totally non-biblical performance.
1. Did the linguist make his intentions clear to the people in that church that what he was about to speak was a language he had learned and knew the meaning, and that it was going to be a test for them? If not, he behaved as a liar and deceiver.
2. Did you voluntarily submit yourself to prayer in that church? If so, going to a strange church and letting those people pray over you, you have noone to blame but yourself. If not, then I would have had the assertiveness to say "no thanks" to their offer of prayer.
To be honest, my last visit to an AOG church in Auckland was spooky for me. It was in the worship time that the pastor went around whispering in people's ears, "Jesus is here." People would then shake and fall over. He tried it on me, but I wasn't going to shake or fall over for anyone! After the service was over, I got out of there, resolving to never go back.
Your description is the use of prayer and tongues as some kind of sorcery, that praying in tongues is a kind of force in itself to achieve a result, whatever that result might be. It is not the tongues itself that is the issue, but the way it was being used on you. Even if they didn't pray in tongues over you, but prayed in English, it still would have been sorcery, because the prayer would be used with the same intention - to achieve what they intended.
True prayer in tongues or English is making requests to God and leaving the result to Him according to his will. I totally believe in praying with tongues, but I would never pray with tongues while laying hands on a person. And laying hands on people can also be a form of sorcery when used to try to transfer some kind of "force" to the person. I wouldn't allow anyone I don't know or trust to lay hands on me because you never know what they might be imparting to you.
Biblical ways of laying hands:
1: receiving the Holy Spirit
2: conferring a leadership role
3; conferring an Abrahamic blessing
If I pray for a person who needs healing, I take them lightly by the wrist and say, "Jesus heals you." I don't go into any extended dramatic prayer to try and heal the person myself through prayer. That could be a form of sorcery in trying to transfer some healing "force" from me to that person. Jesus is the healer, and the prayer of faith for healing is very short and can be made in just three words as I demonstrated. Taking the person by the wrist is agreeing together to look to Jesus for the healing.
If I am asked to pray for someone that God's will be done concerning an issue or request for prayer, I stand behind the person and put my hand on their shoulder. This is the act of both of us in agreement standing before God's throne of grace. If I stood in front of the person then I would feel that I am trying to be a mediator between him and Christ, and blocking that person's access to God's throne of grace.
Also, in some cultures, it is a total insult to put one's hands on another's head.
As far as the falling down stuff. Falling backwards is mentioned only when the crowd came to arrest Jesus. He showed that no one could arrest Him by force, and that He went with the crowd voluntarily. When a persons falls down under the convicting power of the Holy Spirit, they fall on their faces before God. John fell at the feet of the glorified Christ when He appeared to John in the book of Revelation. He fell straight down, not backward.
I have seen preachers lay their hands on people's heads while the person is looking up with their eyes closed. What happens that if the preacher slightly rocks the person back, the person overbalances and falls backward. So, it is not falling in the Spirit at all, but the natural overbalancing of a person being rocked off their equilibrium.
I have seen when people truly fall when affected by the absolute sense of peace from the Spirit. Their knees buckle and they sink directly down like a person fainting. Not with straight legs falling backward. When the peace of God overwhelms a person, their whole body goes limp and crumples. Also, the experience is usually rare event for the person, and it is a lifechanging event. Not a regularly Sunday evening performance.
Anyway, those are my views on these things.