I don't recall this being about sexual abuse, but you can google "On Alienation" which was written by a former member in my city.

I do think it's true that all American orgs of a certain size have SA problems. However, that is a terrible indictment of the current state of the American left and not a statement that it's OK. These problems are more than just bad apples. I suspect there's something about cadre orgs that enables abuse of members. A substantial reason I left Socialist Alternative was their unserious response to multiple sexual assault scandals (one of which was highly publicized and resulted in an international split), which was hampered by their highly centralized leadership. I hope this criticism shows that I'm not a PSL specific wrecker.