If the ball rolled fine before it was cleaned, then I doubt the doubt separated or anything. You would have had to apply a nasty amount of pressure in the same spot for a long time to put a flat spot on the ball with a spinner.
Now, was the ball physically bouncing, or did it just not hook?
I have had balls before with flat spots before in your track and you can hear it rumble every time it rolls over it. If the ball was cleaned with an abralon pad, perhaps the surface just didn't match up to what you had before? Hard to tell without seeing what you had before with the ball.
But, in short, if the ball rolled fine before and all you had was the ball cleaned and surface altered, nothing should be wrong with the ball now. May need to tweak the cover stock though to get back your desired reaction. The Track cores are single density, basically, one piece cores, and it is highly unlikely it cracked during the cleaning process. I think the surface needs adjusting after the cleaning.
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Louis Franzetti
Track Regional Staff Member