Free Throw Violation

[M&M Guy]

Ok, sorry to bring this up again, but I really am confused about 9-1-9. I understand the part about the feet of the player along the lane cannot be "beyond the vertical plane of the outside edge of any lane boundary, etc." This is to allow for players leaning in, but still being considered in their lane space. But, in the extreme and unlikely example of, say a player doing push-ups in the lane - as long as their feet are within their lane space, even though their hands are in the middle of the lane, surely you aren't saying that's legal? (If you clear this up for me I promise I won't call you Shirley anymore.) Just to eliminate the "disconcertion" possibility, let's say it's a teammate of the freethrower, and the free throw is made. Have I been missing something all these years? Or is it just because it's Monday and I'm having a brain fart not figuring out the answer...