re: Bumblefoot -- wouldn't surprise me at all. NYC guy, MP probably knows him well, Art of Anarchy is just getting started, and very different than progressive metal.
That said, if it WAS him, I'd be a tad disappointed. However, they could be auditioning guitarists too. I think MP's reaction probably has had the opposite effect that he wanted. Because of his outburst, he has people thinking it IS Bumble, as opposed to one guy. Who knows, maybe there's two guitarists in the band. Something JP said he'd never do with DT, but maybe Mike would do it.
Long story short -- MP overreacted (shocker), Bumblefoot may be in the band, and hey, dude can play. Not sure if he can really write songs, but he can play. For me personally, it wouldn't be what I wanted to see/hear, but I'm looking forward to the album info this summer.