You've been reading bloggers like "The Nation" which obviously doesn't know diddly-squat about the NFL. The statements I read in their blog indicate it was written by someone who barely knows the NFL plays on CBS and FOX every Sunday during the day.
Being a " 'tweener" in the NFL draft has nothing to do with size or talent. It means a player is on the board at two different positions, and is not stellar at either one but is well worth a 3nd or 4th round choice, not a tail-end-of-the-draft choice. In Sam's case, he was considered light for a linebacker, but too heavy to play DB, though both were "doable." Putting some weight on him and playing him as a third-down pass rusher appealed to a lot of teams. In January, Sam was slotted by Kiper and other analysts as a late 2nd round choice. After he "came out," he suddenly fell to fourth or early fifth round.
Tell me how that happens, unless teams are concerned about how he will be accepted in the locker room?One, it is "Sam" -- singular.
Two, the media has no say in his performance or his acceptance in the locker room. The media is chock full of liberal bias, even in the sports department. Of course they're going to praise the Rams. Being from Missouri, knowing St. Louis is heavily blue collar and Catholic, I doubt they have a whole lot of praise going on for the Rams for creating what is going to be a media circus and debacle for their team.
Never have read "The Nation", got most of my info (the correct part, not the mistakes you found - those are all on me) from SI and Football Outsiders, and that nearly all came after Sam's wretched time at the combine.