This last game is for Garrett's benefit as I'm sure Jerry Jones could care less and wants to finish 4-12 at this point.
Garrett needs a win, period, any way he can get it so since he's not going to be fired and really hasn't lost the team I don't see why they shouldn't go out there and win. Allowing professionals to practice, prepare all in an effort to lose is alien and IMO would lose the respect of a lot of players and potential free agents.
BTW, had Dallas lost in the 2010 season finale vs Philly they probably draft 6th instead of 9th in 2011 and they might not have drafted Tyron Smith.
Having just drafted Dez they pass on Julio Jones and probably either take Aldon Smith or maybe stick with Tyron.
Or maybe Dallas instead of Cleveland makes the trade down with Atlanta for two 1st round picks, a 2nd, and two 4th round picks. With the 2011 27th pick, they probably take Mark Ingram.
I think they did fine enough with Tyron over Ingram and definitely over Aldon Smith. With Ingram, I think they pass on DeMarco Murray.
In 1987 they won the final two games of the season to finish 7-8. They drafted Michael Irvin 11th in 1988. Had they drafted 6th, one slot ahead of the Raiders, they probably get Tim Brown, Sterling Sharpe, or maybe take Irvin anyway. One might call that a wash-- I wouldn't. I take Irvin over Brown 10 times out of ten. Sterling was a monster, though, but I don't know of Brandt/Landry pull that trigger.
Seems like they ended up fine.