He wasn't there, but according to Fox News and AP somebody close to the Jackson trial was there:
"Among the crowd that arrived at the Chumash Indian Casino (search) was Pauline Coccoz, a member of the jury that acquitted Jackson of child molestation charges. She called her jury service "the hardest thing I've ever done in my life."
When she walked into the casino and heard Jackson's music playing, Coccoz said, the enormity of what had transpired hit her.
"They were playing 'Beat It,' and I almost started to cry," she said as she waited to enter the showroom."
Yeah, I'm crying now - Justice wasn't done