As someone who grew up in a yeshiva where corporal punishment was the norm and where some rebbeim took it to a sadistic level i can sympathize with what is deemed abuse today. Some of the OTD community will say they were abused and not be specific in mentioning that it wasnt sexual abuse, but rather corporal punishment. Men hitting wives is abuse, fathers, mothers, or rebbeim disciplining a child with corporal punishment, is unaccepted today but was the norm not too long ago. Was that abuse, maybe.
We have a classmate who went OTD (he claims) because he was abused by the exact same rebbe that we all had. He was not sexually abused. He just couldnt handle the corporal punishment. We (his classmates) had the same experience and did handle it. This is a sixth grade rebbe. He went OTD somewhere in his Bais Medrash years.