[Back In The Saddle]

Originally Posted by JRutledge

You could make this into an accidental whistle if you know you were wrong immediately. But by rule if you grant the timeout incorrectly, you have to live with it.

Peace

And once you've blown the whistle, even though it's an IW, the ball is dead and either team may request and be granted a time out. So once you've blown the whistle, you're stuck with it.