Chris Weidman's shattered leg will NOT stop the former UFC champion from returning to the Octagon ... so says "The All-American's" training partner, friend, and family member, Stephen "Wonderboy" Thompson.
TMZ Sports talked to Wonderboy -- who was in Chris' corner when his leg snapped during his fight with Uriah Hall -- and we asked whether the 36-year-old fighter will ever fight again in the UFC.
Stephen -- whose brother is married to Chris' sister -- didn't hesitate when he answered.