How to resume after clock starts during throw-in that is untouched.

[Afrosheen]

Sorry, in situation one (the alleyoop play off a throw in), I forgot to mention the horn went off during the throw-in and before the ball going out of bounds along the end line. The pertinent information is that the horn signifies that the clock prematurely started and that the ball’s location is nearest the end line when the horn sounded.

Based on the case scenario previously provided in this thread, is it indeed that the ball is returned to its previous location? Would this be the only scenario where a “do over” is allowed?

I apologize for omitting the part that the horn went off in the middle of the alley oop scenario.