If you are sincere, you will understand that DragonSlots doesn't intend to join in this drama. His intention wasn't to harm your reputation and that was why he withdrew the allegations immediately you sent him a pm. If not that yahoo62278 opened a parallel thread, you would have gone uncaught.

I believe that instead of pushing this further, it's time for self appraisal in your managerial journey. Check where you have done well, (the idea you shared with DragonSlots that made him hire you) and improve in that. Also check where you did bad (contacting clients if other managers and offering them lower fees, joining contests with alts), and amend. There's still an opportunity for a second chance.