Technical garbage going on in here.
Player collects ball, is falling out of bounds, jumps, calls timeout in air, whistle, lands.
You are not allowed to call timeouts while flying out of air, ISU ball.
Was this "technically" an inadvertent whistle? Maybe? But the spirit of inadvertent whistle is it impeded the regular action of the game unfairly to the advantage of one team. Reset possession.
In this instance, KSU did not try to call timeout because of an inadvertent whistle, but rather the IW was the product of them doing something which they're not allowed.
Turnover KSU is the most correct to the spirit of the play and a simple explanation that you cannot call a timeout while jumping oob, possession ISU would have been the least controversial and most true to what transpired.
Giving KSU the ball and not taking away a timeout is by a large measure the worst way you could possibly rule this play.
I don't care what any lawyer or officiating apologist has to say.
This is not influenced by my ISU Fandom. No questions please.