He doesn't say that, but to me he does use a little weasel wording, the whole passive voice "regret my participation in", when to all accounts so far, it seems

He doesn't say that, but to me he does use a little weasel wording, the whole passive voice "regret my participation in", when to all accounts so far, it seems that he was one of the instigators, and quite possibly the actual instigator of all this. "regret my participation" sounds much more like "going along with it".