I've never really understood how people get that Paul was speaking of himself, here...I had always thought that he was speaking of John, who wrote the Book of Revelation.
However, let's assume that Paul was speaking of himself...still, I do not see how you get that he was caught up to "Abraham's bosom".
What Paul was
about was whether this one who was caught up into Paradise, whether it was him, or some other man, was caught up in his body, or out of his body. There doesn't seem to be any confusion in his mind about where...only how.