I am with Jaime on this one. Diehl was a human turnstile with the agility of a tackling dummy in the SF game. He and Boothe were so totally overmatched, it was almost embarassing. The job will be Beatty's next year as he was very effective as a pass blocker but was no better than Diehl in the running game. If the running game did improve later in the year, it had very little to with Diehl's insertion to OLT.
Unless you have game tape access, it is difficult for fans to break down player performances. This is where game-tape review services like Inside Football and Football Focus help put things into perspective. According to them, Diehl has been the weak link in the offensive line hands-down. He no longer has any punch or drive in his run blocking and his lateral agility is worsening by the year (it was never good to begin with). Moving him to ORT? Why? He couldn't handle the less demanding OLG and now you are asking an aging offensive lineman to play a more demanding position?
Sorry guys - but I just can't see the Giants bringing this entire offensive line back next year. The Giants were dead last in rushing in the entire NFL. How is that even remotely acceptable? Sure, San Francisco has a good defensive line. But that good where Eli was hurried, hit, harassed and sacked virtually every passing play? A few of those are acceptable ... but just about every passing play? Totally unacceptable.
So keeping Diehl and starting Boothe would, in my opinion, be a huge mistake. I really believe the Giants will move on just as they did last year, recognize that this offensive line is one of the league's worst and restructure it to become younger, more athletic and better. I believe the Giants will cut Diehl and McKenzie, reinstate Beatty at OLT, Baas at Center, Snee at ORG and then draft and/or sign via Free Ageny a OLG and an ORT.