I think the only thing I said that wasn't proved was the fact that he was trolling our forums so:
http://forum.feed-the-beast.com/threads/password-issues.4157/
The following post was in between posts #11 and #12
This was the final post that got him banned from our forums as he had already had warnings for other things, it's kinda difficult for me to prove that the user wasn't a developer for us because well... he wasn't a developer :3 He did have a rank on our TS called "Developer" which is given to anyone that is a developer of anything, this doesn't have to be related to FTB in anyway, 65 users currently have that rank so it isn't really anything special to have, when he was given the rank slowpoke explained to him that this was so he could communicate to iBurn as pm powers aren't granted to normal users and that it did not mean he was a developer for us, all our developers are given a separate rank that gives them access to the FTB development rooms which Jamromhem would have had no access to.