I didn't watch all of the 'boys / iggles game - couldn't bear it - but from what I did see, I have to say that there's plenty of blame to go around. On the interception I saw Romo throw, yeah, he's the QB, and he takes the stat hit for the interception, but Roy Williams gave up on that route. No big surprise there.
The whole team needs a collective butt-whuppin.