Had to go with RLKAG which I guess is the forum equivalent for not liking the other choices.
The best thing that could've happened to Mac is if he got a minor injury in practice after the Bills game and missed the rest of the season. That way he can move on to a new team next year with some sense of confidence in his game. The end of the Colts game showed that mentally, he does not need to be starting any more. How many more times do we have to see him alone on the bench in a dejected posture, to realize that the kid has no confidence in his game. I feel bad for him, because his rookie season showed so much promise.
Zappe's pass to end the game was piss-poor (I still think he thought it was a free play), but his mindset has to be in a better place than Macs.