Mick Foley performed his stand-up comedy routine at the Upright Citizens Brigade Theatre in New York City after last Sunday's Survivor Series pay-per-view. Apparently this was the scheduled event that was believed to make him unavailable to participate in the pay-per-view.
However, I'm told Foley was backstage at Survivor Serious but obviously wasn't used. The official WWE website wrote an article about Foley's performance that was also posted on the Upright Citizens Brigade Theatre's website at this link.
While Foley's role in WWE is undefined, he's advertised for this Tuesday's Smackdown taping in Charlotte, North Carolina.