Oh boy! Where do I start!! He has been quoted by Michael Bush saying -
“You’ve got to impress the men and make love to the women.” Jackson is quoted to have said about his stage performances.
... and ...
“Girls love cake, so we give them cake.”
I honestly don't know what "cake" refers to, but this was during shirt ripping phase.
So I don't think it came from trauma, it was well thought out strategy by Michael. It got more and more explicit as he got more confident. Michael has often been viewed as someone who wanted to push the boundaries, and his provocative dancing is one way of pushing the boundaries. I am sure he drew inspiration from his early years watching dancers in strip clubs. I won't associate his dancing with trauma, he seemed to quite enjoy pushing those boundaries.
(... and we are very grateful for that
)
I have not read Michael Bush book, this is my source
An examination
medium.com