Nice catch on the quote mining. I didn't see the postgame interviews. You often see a handful of quotes re-purposed ad nauseamand re-contextualized with different angles. The article I linked sure looks like a bit of a hit piece on CM3, leading with the Sherman/Thomas praise. There could be nothing to it at all and he thought his knee really went out. He was back in on the next series, so it could be much ado.
Prior to this, I did find it interesting that he wasn't made a captain for the playoffs, especially since he took a position change without any apparent public sniping (if he was at all upset by it). That could also be nothing more than Burnett and Peppers really stepping up their motivational speaking, though.
At any rate, I expect a more fully developed McGinn special to come out sometime in March questioning Clay's ability to truly be a leader of the defense as the Packers had likely envisioned when they paid him.