Crispin Glover is firing back at the ex-girlfriend who accused him of turning her into a "sex slave" ... claiming her lawsuit is a money-motivated attack built on false allegations. The "Back to the Future" star filed new court docs, obtained by TMZ, asking a judge to strike part of his ex's lawsuit ... and he's offering a dramatically different version of what happened between them. As TMZ previously reported, the woman sued Crispin in February, alleging he lured her from the UK to Los Angeles