I was running around the Reserve Power Core in the Reserve Generator Site area killing mobs, and all of a sudden I had flesh golems spawning all over the place. I ended up with over a dozen fighting for me. Submitted in-game bug report too.
I have no idea what caused my flesh golem to spawn so many clones but it seems like a bug to me. Here is a link to the screen shot showing the problem: flesh%20golems%20clones_zpsd2mdyyhq.jpg