Thought about this last night and woke up still thinking it, the Ravens should have waited to call their last time out until like 15-20 seconds were left.  That would have forced a real decision from the Bills on 3rd down i.e. 1. is that enough time to snap, take a knee, and run the kicking unit out,  2. Do you snap and let Allen run out of bounds or throw it away to burn a few seconds, 3. Just kick the FG on 3rd down.  All of those would have given Baltimore a better chance to win then just calling timeout with over 30 seconds left.  Easy decision for  Bills to do what they did.