Well, not in real life. But he plays a Jeffrey Dahmer victim in new 'slasher comedy' 'Dahmer vs. Gacy.' You can see Adler very briefly around the :41 and 1:03 marks in the trailer for the Ford Austin movie. Adler reportedly first gets picked up and then killed with a drill to the head by Dahmer.
I wish I could make a joke about it being payback for all the pain he's caused the rest of us via his on-going musical efforts with Adler's Appetite, but as basically a glorified Guns n' Roses cover band my one time seeing them (with Quiet Riot and Bang Tango no less) was actually a really good time. They do their thing very well.