Hindsight being 20:20, we should have brought in a guy like Moore or Anderson as the veteran presence. But that's hindsight. They had seen Peterman a lot in practice and he had performed well, they thought AJ would be a guy that would come on once he got his chance. and they were wrong on both, it would appear.
So now Allen gets his shot. A few games earlier than many of us thought. But it was inevitably anyway.