I think, and I could be wrong, that Old Timer is just a friendly guy that prefers to talk to opposing fans rather than just interact with UT fans. It doesn't really seem like trolling. He's not been insulting, hasn't really responded aggressively to insults hurled towards him, and seems to stay on point for the most part. It could be argued that his "on point" is annoying to members of this forum but there is no rule that says you have to read to or reply to every single thread.
I have no doubt that the word on the street in Austin is that Saban is back in play. It doesn't mean it's true. It just means that a rabid fan base, with a mentality that you can't really understand until you've experienced it, thinks it is true.
Texas fans make the unrealistic expectations of Auburn and Alabama fans look tame. (not that all expectations from any of our fan bases are always unreasonable but we all know that they sometimes are.) The superiority of Texas to every other state is ingrained in Texans for their entire childhood. To them, and to many other people without ties to either place, Texas is a much better job than Alabama. It does not appear Saban is one of those people.