Wow, Eric, I'm glad you posted this! I've been wondering how I've been killing my new SPSs - not all, just some. They'd been bleaching out from the base up, and I figured it's because I'm new and obviously doing something wrong even though the water parameters are good and they get good light. Then I read your post and looked up to see my yellow clown goby snacking away on a new acro that had suddenly started bleaching today. Little snot..... I moved it to the sand and he followed it down, so it's now set right in front of my 5-6" watchman's burrow - he doesn't let anybody get too close. Of course, now a new "snack" will just be selected.....
Onux, mine aren't as aggressive about eating as their tankmates, but like everybody else they will go after the frozen brine shrimp. Good luck!