Some fans are speculating that there is backstage heat on R Truth because of the way that he has been utilized by WWE over the last several months, but that is not the case. The company still views him as a valuable role player, but management simply is not interested in pushing him at the moment.
Initially, the feud was designed to give the spotlight to newcomer Xavier Woods, but it now appears that WWE has shifted the attentiont to Brodus Clay and his impending heel turn instead. That's why they went with that segment on TLC last night.
The top candidates to work the kickoff match at the TLC pay per view right now are Xavier Woods, R Truth, Brodus Clay and Tensai. There's also a chance that WWE could opt to do a singles match between Woods and Clay as well.
While many fans are under the impression that it is a permanent thing, WWE might not be doing a permanent heel turn with Brodus Clay. The belief is that this is just to give Xavier Woods something to work with.