I'd like to ask you the same question that I asked Earburner . . .For what it's worth, I will post my views on this whole 'bound/loose' ball of wax.
When Satan is 'bound' it simply means that he is not in a physical body.
When Satan is 'loosed' it means the opposite. Satan is now in a physical body.
This will occur a total of seven times, hence the Seven Heads of the Beast/Dragon...
Revelation 13:1
"And I stood upon the sand of the sea, and saw a beast rise up out of the sea, having seven heads and ten horns, and upon his horns ten crowns, and upon his heads the name of blasphemy"
The Sea is the Sea of People...
Revelation 17:15
"And he saith unto me, The waters which thou sawest, where the whore sitteth, are peoples, and multitudes, and nations, and tongues"
More specifically, the 'Sea' is the Embryonic Fluid in the Womb from which Satan will be birthed from. In other words, the 'Pit'...
Proverbs 23:27
"For a whore is a deep ditch; and a strange woman is a narrow pit"
An example of one time Satan was loosed and birthed is Pharaoh...
Ezekiel 29:3
"Speak, and say, Thus saith the Lord GOD; Behold, I am against thee, Pharaoh king of Egypt, the great dragon that lieth in the midst of his rivers, which hath said, My river is mine own, and I have made it for myself"
Thus, Pharaoh is one of the Seven Heads of the Beast/Dragon.
The bottom line is that Satan has been bound and loosed many times already, therefore it is a moot point to try and create or prove some millennial timeline out of it.
When Scripture talks about Satan no longer deceiving the nations, it is referring to Satan as a Physical Being, and not in a general sense.
Who is "the prince of the power of the air" in Ephesians 2?