maybe he lifted the way Parcells wanted him to lift this year, which brought on the praise...maybe he just didn't want to run all off season...maybe he chose to not finish the conditioning drill, maybe he couldn't....maybe like many great players before him, especially linemen, he doesn't want to do all the work the other guys are doing.
Somehow I'd guess he'll be in the starting lineup on opening day, and between him, Adams, and Johnson, it probably won't hurt anything a bit.