FASTBALL Right In The . . .

[Freddy]

I've only seen Situation #2 (below) two times in 3-1/2 decades. But each time it occurred, I'm not sure the proper call was made in reaction to the situation.

Situation #1) A1 has ball for a throw in. Sensing that the five-second count is about up, he intentionally bounces the ball off the leg of defender B1, intending the ball to go back out of bounds so that a new throw in is rewarded. He does, and it happens just like that. Nothing severe, nothing malicious. Upon the out-of-bounds violation, he is awarded another throw in.
Comment: Nothing illegal here, it seems; or is there? Might he be given a warning for causing delay of the game? But if so, to whom would the resulting throw in be administered? Your response invited.

Now, Situation #2) Same scenerio, but this time A1 FIRES A FASTBALL RIGHT INTO THE CROTCH of B1, who is closely but legally defending against the throw in.
Comment: Seems to me there was obvious intended injury here. Would a proper penalty be:
A) an intentional personal foul, since (4-19-3) A1 undertakes something "which neutralizes an opponent's obvious advantageous position", e.g., the ability to play without pain?
B) a technical foul, according to 4-19-5, "An intentional . . . contact foul while the ball is dead...", though said contact is delivered by means of the ball, which doesn't seem quite right.
C) a technical foul for unsporting conduct (4-19-14) for "a non-contact technical foul which consists of unfair, unethical, dishonorable conduct or any behavior not in accordance with the spirit of fair play"?
D) since injury seemed clearly to be the intent, due to the "fastball" nature of the act, might it be so serious so as to be considered a flagrant foul and subsequent disqualification?

Your response is invited.

Thanx in Advance for Your Insights