VINCENT D'Onofrio, the star of "Law & Order: Criminal Intent," passed out while shooting the hit TV series yesterday morning — prompting insiders to gossip that the actor is "losing it." "Ever since John Kerry lost the election, [D'Onofrio] has lost his [bleep,]" said our on-set insider. "He has been getting into fistfights with people, and when he passed out today, we all thought he was faking it. But then he insisted they call 911." [snip] D'Onofrio, a big Kerry supporter, was said to be devastated over President Bush's re-election. "When PAGE SIX [last week] wrote about 'Law &...