I think I remember reading somewhere that Devin wasn't particular happy with how Physicist turned out because the production and the final mixing of it didn't come out the way Devin wanted it to and I also think there was talk at one point about Dev and Shaun getting together and remixing some of the tracks on there. Don't hold me true for what I just said though, all of it could be totally wrong for all I know.
I dont really see what so bad about Physicist, I reckon it's a great album, it may have it's ups and downs but all albums have those. As a matter of fact i'm listening to it right now...awesome album.