Among other things.
There is so much to complain about following today's complete disaster of a game that even summarizing them all would be just about impossible. So I won't even begin to try. I'm sure that over the course of the coming days (and, in fact, years) the many, many mistakes and failures of today's game will be laid out here and elsewhere.
I'm going to focus on one thing in particular that was completely atrocious, the blame for which lays squarely on the shoulders of the head coach: the management of the quarterbacks.