It does not matter why you dropped the profession, the results are the same. They don’t do account rollbacks in WoW, except in super rare instances of massive server problems. The way WoW saves data that is not a thing. The only snapshots for a rollback I know of are when you do a character service like a transfer. That takes a snapshot of your account that they can roll back to if the char service goes wrong.
Your decision to drop a profession has consequences that can’t be undone.
You got some great feedback in your thread on General Discussion too. Most of the info there looks correct.