I'm going to put a scenario out there. Breaker breaks, scratches, and the 8 ball is travelling towards the corner pocket. He looks around real quick and sees that the entire table is open, but there is a ball near the spot.
Eight ball is travelling towards the point of the pocket, looks like it might A. Go back and forth, hanging up, and leaving the opponent an easy run out..or B. Might fall, and tie up the ball near the spot.
Breaker grabs the 8 ball as soon as it touches the tit of the pocket, and says, "I'll spot it up."
NOW, you see the potential for a person to have done it on purpose to gave an advantage. In this case, to ME, it does not matter what the intention was, one should not be catching balls. And if you do, be prepared to get a bad call put on you.
There I go again.. Making my life simpler by using "common sense", rather than being a "rule Nazi".
I would never be one here arguing a bad call when I did something stupid in a match like grab a ball before/as it fell into a pocket.
I still luv ya like a brother, Jim. I just don't see what the big deal is..
Russ