Basketball bad boy Dennis Rodman filed annulment papers Monday to end his 9-day marriage to TV actress and ex-Playboy model Carmen Electra, a spokeswoman for Electra said. “Carmen and Dennis spoke several days ago and mutually agreed (to end the marriage),” said Electra’s publicist, Cindy Guagengi. Details on the filing in Orange County (CA) family court (Rodman has a home in nearby Newport Beach) were not available. Rodman, 37, and Electra, 26, have been dating since the spring.