[LRZ]

How about this? If there is an intervening act--e.g., a foul, violation or basket--apply the rule as written. If not, do it over. This would be as consistent as the current rule.

I've had this happen once or twice. In one game, we caught our error just after the in-bound player caught the throw-in; we did a do-over. The other time, the coach brought our error to our attention after a basket had been scored; I explained the rule to the coach, who accepted the explanation, and we played on from the point of the basket.

In any event, it serves as a reminder, when there is a break in the action, to always reinforce whose throw-in and where.

Edit, after Raymond's comment (Post #7): Neither of my errors occurred on AP possessions, but after time-outs. But Raymond's point is a good one.