This is a tough call. Jason Berken basically lost this game in the first inning, but has pitched pretty well ever since. Seems like the story of his life, since the Orioles again have given him absolutely no offensive support.
So what do you do if you're Dave Trembley? Just keep throwing him out there and seeing if his luck changes? He seems to know how to pitch, but he's not one of the elite prospects and he just can't seem to win.
Maybe the best argument to keep him in the rotation is that you've got to get Rich Hill out of it first.