Free Throw scenario / questions

[JugglingReferee]

A player could just line up properly, then change their position to match your description once the ball is released. I doubt that the T or L (or C) can properly observe this violation.

I wouldn't be looking for mucous hanging off someone's nose.

Short of an obvious foul.......

Now if they get into a situation like what happened with the switch pitcher/switch hitter situation a few weeks back, then ya gotta do sumthin'.