To me it would seem that he knew this team wasn't going anywhere and he knew he was still young enough to have a chance to play with his countrymen, so that's probably the reason why he went back. And to me, I'm perfectly fine with that.
Pretty sure Holland hasno intention of moving Howard at this point, at least from an article I read. He said they will be going into the season with Mrazek as the number 1 goalie, but he's happy to still have Howard, as he doesn't want to put too much pressure on Mrazek yet, and likes having Howard's veteran presence behind him to help out. Mentioned that Mrazek is only 24 and doesn't want him to have to handle 70 games. Or maybe he's just resigned to the fact that he's stuck with Howard and is trying to put some kind of positive spin on it. Who knows I guess.