One Piece is pretty much the only anime I watch without reading the manga. Obviously because the show is so awesome, unlike other animes that screw up the show and that's when I just read the manga, that I don't really feel I should read them. So I don't know for sure of what you're saying is true, but since you said that I'll read the manga to check it out. But this is the show so i guess it's a bit different, it was about Bon Clay being an amazing friend to Luffy and the other inmates aswell and tries to do the greatest act any friend would do to another friend. Such an amazing episode by the way! T.T Stupid Bon-chan! I swear, saving Luffy countless times. I really love this Arc because it shows their relationship in that Hell.

actually, he only hypnotized the ones in marineford. That was the purpose of his becoming a shichibukai; to be able to infiltrate marineford and get a seastone ship, which is the only way to get into impel down. Lafitte had never been to impel down before. The Gates of justice are not connected to each other, and when they arrived they didn't go to the control room. Lafitte was with Blackbeard the entire time and was poisoned with him. BB probably needed him to get the keys to break out the level-6ers. Either way, lafitte never hypnotized anyone on impel down, (Although he technically could have). BB wanted to go back to join in the fight and destroy Marineford and Whitebeard after leaving impel down. There was no way they could know exactly what ship they would have (since they would have to steal one), or even if they could get in contact with the Marineford control room again, that's why he hypnotized them to let in any ship. Blackbeard's success at impel down, however, was almost entirely coincidence and luck, as you would know if you read the manga; he didn't have much of a plan coming in. So please don't play down the drama in Bon Clay's sacrifice here, or Oda's forethought.