You Make The Call (again)

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Swatting at the ball while it's inside the cylinder in and of itself is not a violation. No contact, no violation.

That being said, once he swats at the ball, he's no longer grasping the rim for safety resons alone, a technical foul should be assessed. The location of the ball has no bearing.

Now, if he contacts the ball during this event, you may have BI depending on the location of the ball. No matter that outcome, you should have a technical foul as well.