Dustin Penner -- former hockey star for the Ducks and Kings -- is accused of assaulting a local gym manager ... but cops say it's just a civil dispute over money. Here's what allegedly went down -- an Orange County gym that holds kickboxing classes for kids got rolled by 6 guys and a German…

Anaheim Ducks star Dustin Penner begged a judge to sign off on his divorce from his hot actress wife ASAP ... claiming the legal war is messing with his head and distracting him from playing like the kind of guy who deserves a FAT contract, TMZ has learned. We broke the story, Penner -- who killed…