From the article Wist linked above: "Capers hasn't had a run defense rank better than 14th since a No. 1 finish in 2009. It's probably why Thompson and McCarthy were so ready to get rid of some people and try somebody else."
Get rid of some people and try somebody else? Do you think they meant players or DC and coaches? I would think players, because how would anyone find out from TT/brain trust what they were considering? They play it close to the vest.