I will continue to support Charlie as long as he is our head football coach... That being said, he may not be the coach for much longer.
I think 8-4 (although meeting preseason expectations) may not be enough to bring him back. That means 2 more losses along the way to any combo of OU, Baylor, TCU, Tech, WVU (if he loses to ISU, KU, KSU... Well.... That just wouldn't be good). I think if he loses just one to finish 9-3, he's fine. I think if he loses 2 of those to finish 8-4, then it depends on how those games were lost. If they were high scoring shootouts with continued defensive lapses, that doesn't look good. Even if we win a bunch, but we win games 50-47, not sure that would save him either. We need to win AND defense needs to improve, not just one or the other.
Tl;dr 9-3, he's coming back. 8-4 with improved defensive fundamental, no more missed tackles or blown coverages, and more turnovers, he's coming back. 8-4 with losses (or wins) coming in shootouts with bad defense and questionable management, he's gone.
Just my .02