Never underestimate the power of ego, by coaches or by NFL owners. If Strunk thinks she knows what's best and that Sark is a good fit, then she'll green-light an offer. If Sark thinks he's wasted at this level because of the inherent limits (NIL but no union or owners group to set real rules; no trades; etc) then he'll go.
It would create great angst throughout the universe, sure. Texas could money-whip a lot of people, but whom would they really want? Who's actually available? All things considered, they are positioned to make a run at Cignetti if it should come to it. They MIGHT make a run at Clark Lea (Vandy) if he gets a playoff win under his belt, but there the question would be how much of that is him and how much of that is Baby Boy Diego?
Tangent: Penn State could money-whip Lea. OTOH that's exactly how they got James Franklin.