Kind of crappy of Brad if true given the history with KSU.
No that's what anyone should do in his situation.
His situation is somewhat unique in that the leverage is based on the sentiment held by fans. KSU likely wasn’t willing to pay anyone what they offered Brad, so preemptively reaching out purely for leverage is a little bridge-burny to me.
That would be like if I had a great relationship with a former co-worker and then pursue getting an offer from their new gig based on that relationship (which I wouldn’t have been able to get without that relationship) just to leverage a raise.