well, what i can think of:
the guy who got in control of the original account reported him and the thread.
as long as white has no real proof, bct-mods are doing the right thing from their position.
i hope he does not loose faith, i like gpu and his ideas...
He's banned for 7 days.
I guess they considered the 15 posts as spamming. I'm pretty sure he said he got them to lock the other account, so that's probably unrelated.