Question about Benefit for Sim Cain

Hello, I saw that Tonic is hosting a "Benefit for Sim Cain" in late July (I believe the 24th) with Zorn, Marc Ribot and Vernon Reid among others. I'm a big fan of his drumming since his days in The Rollins Band. I'd hate to jump to conclusions. But I am wondering if something bad happened to him? Please email privately if this topic has been covered previously. Thank you.