Now I have little doubt he'll be back (not the first time he left after all) but that's not the point. The thread in question is actually pretty mundane and there's nothing in it that'd even be delugeable. I honestly can't figure out what in it was so horrible he decided to leave.
And then you often have Gully and oakvale proclaiming "OMG worst thread EVER!" (hell Gully did it right after that) to threads that are at worst fairly boring and somewhat hackish.
Ah but be fair BRTD, it was a truly terrible thread.