Left side outer A-Arm Mounting point failure #1

YIKES! Look what I found when dropping my rear end for upgrades. I swear it wasn't there in February 2010 when I went over the car before the Laguna Seca track day. Glad it didn't fail at speed. Maybe 335rw ft-lbs played a role? Time for a new Penultimate. I don't think this is covered under warranty.