I'm doubtless in the minority. I don't think this is properly laid on McCarthy.
I think it falls on the front office/scouting/player personnel department. And that means TT, because he's at the top of that part of the organizational chart.
I don't have a problem with Ted Thompson in general. But I think the team in general just isn't very good at assessing OL talent. I mean, setting aside the Klemm/ODwyer/Whitticker TT-year-one debacle, it isn't that Ted Thompson has failed to put a lot of attention on the OL.
Oh, he hasn't gone after big free agents like Hutchinson and Faneca, to be sure. But he hasn't gone after big free agents at any position (unless one counts Woodson). But that approach to free agency hasn't really bit him except at OL.
When it comes to OL, the team just keeps shooting blanks. On good days people like Colledge, et al look "servicable" as starters. On less than good days? Well, we just saw another of those.
To me this reflects something wrong in the scouting/personnel evaluation department. I don't think we should talk about getting rid of Thompson or McCarthy if this team ends up 6-10 again. What we ought to do is clean house in that part of the scouting department that evaluates OL talent. And pay whatever it takes to hire the OL gurus away from other team's personnel departments.
And do not be conformed to this world, but be transformed by the renewing of your mind, that you may prove what is that good and acceptable and perfect will of God.
Romans 12:2 (NKJV)