Yes....best I can tell the red and black cucumber got caught up in an MP40 and than puked it's guts killing four fish. Found the remains of the cucumber stuck on the outside of the MP40. I also think the reason he was up next to the powerhead was that I had recently picked up a diamond goby that clean up all the cucumber's food, and he was just looking for food. I had had that cucumber for years.
Thanks for sharing. This seems plausible for our issue. I dont know for sure but I don't see him around and I know he had gotten in the sump but didnt think he could make it to the skimmer section.