LATEST: Marie Osmond's Dancing With The Stars partner Jonathan Roberts has blamed the Malibu wildfires on the singer's fainting spell on Monday night's (22Oct07) show. Osmond collapsed in the middle of a grilling from judges on the U.S. reality show after performing a samba routine with Roberts. Show host Tom Bergeron immediately cut to a long commercial break, allowing Osmond, 48, time to recover. And now Roberts has revealed what happened after cameras cut away from the live show. He says, "The paramedics were taking her pulse and she wasn't moving." The professional dancer adds, "I think it's a little bit of her asthma and all the fires here in Malibu (that sparked it)." Former Dancing With The Stars contestant Heather Mills, who was in the audience when Osmond passed out, admits she initially thought the singer was joking. She explains, "It was such a theatrical drop. I thought, 'Wow, that's fantastic.' Then it was like, 'No, that is not a joke and she's not moving.' Everyone's heart stopped for a second." Mills was Roberts' partner in the last season of the hit show.