I really had no problem with what the Pats did in the 2nd half, either.
Its really one of those cases of "[dang]ed if you do, [dang]ed if you don't".
They went for it on 4th down multiple times instead of kicking the field goals. For the most part, they kept it on the ground and when they did take it to the air, it was underneath stuff.
After seeing what happened last year with losing Brady in the first game of the season, its more glaring then ever that the team has to have a competent backup in case of disaster. Having Hoyer work the offense for nearly the entire second half was a good thing. I have no problem with him throwing some passes. I can't really expect the Pats to go one-dimensional and run for the rest of the game when they're not even halfway through the 3rd quarter. Good to get the kid some work. They pulled Moss and got Aiken some looks. You're kinda limited with the active roster on any gameday so you can't go completely 2nd string there, hence, seeing Welker out there.
Also, fault has to be found with the Titans here too. That defense was atrocious and wasn't stopping anything. The Pats were still gashing that offense with the run. This a professional football team that we're talking about. They should be expected to play some competent defense. They have to make some stops. It should also be noted that the Titans were turning the ball over in their own territory over & over, giving the Pats excellent field position which helped lead to scores.