Try tucking the pinky (if you can) and taking it out of the release. You will get more side roll, but it should take most of the pressure off of that digit when lifting through on the shot.
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Dan
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Engineering * Bowling = a fun and practical application of rotational kinematics.

Bowling Nerd Herd (TM) Member

This happened to me recently. Go to a Walgreens or a cvs type store and find a small/medium sized finger splint. Tape your pinky finger to  the splint and then tape your ring and pinky finger together, but not to tight. Make sure you can bend your ring finger(only tape the bottom part of your ring finger). I would also recommend taping the bottom of the splint to your hand so that the splint doesn't shift while bowling    

http://www.walgreens.com/store/product.jsp?CATID=100124&navAction=jump&navCount=0&nug=VPD&skuid=sku3459712&id=prod3460869#

this one is similar to the one that i used. It takes some time to get used to it but the pain that i had was very minimal.
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Proud member of the 5-pin 299 club
Whoa, chill bro, you know you can't raise your voice like that when the lions here.
Picked the 4-pin clean.....twice!!