Terrible penalty that leads to the TD. Brady wasn't even going to Welker, so that call on Ivy was even worse. That would have kept the Pats out of the endzone and would have been huge, again, for Baltimore. But you can't give the Pats a second chance, or they'll hurt you. I think they finally get their heads on straight in the second half. That drive looked a lot better.
I will say this though, Boller's playing a hell of a game. He's managing the game well enough to keep Brady off of the field as long as he can. Good stuff from him.