Conversation so far:
What made Izzy Stradlin return to Guns N' Roses the second time?
In May 2006, thirteen years after his last performance with Guns N' Roses, Izzy Stradlin made a guest appearance at the band's show at the Hammerstein Ballroom in New York.
Was Izzy Stradlin's guest performance with Guns N' Roses in May 2006 a success?

Question: What made him stop performing with them again?
Self-contained rewrite: What made Izzy Stradlin stop performing with Guns N' Roses again after 2006?