Romo said after the game (apologies if this was already noted, I just skimmed) that he had a few options on that play but that he had the coverage he wanted on his best option and was going to go with it.
Personally, I love that call, that throw, that catch at that situation in the game. Huge cajones on 4 and 2, and it should have paid off. My only complaint is that the way the clock broke, we left Rodgers with the ball and time-outs and time. But I don't really think we could have chewed up enough time to make it impossible for him, so maybe scoring fast was smarter in that case, too, if we wanted any shot at all of having the ball back after the next GB possession.