Hmmn four seats needed for crew transport due to overbooking. Four passengers needed to leave plane and travel on another flight. Three leave without any apparent inciddnt. One refuses, engages in hand to hand physical exchange, pulled from seat onto floor, pulled down isle by upper arms/ wrists. His rather dramatic refusal includes screaming and shouting "I am a doctor".
aND then after apparent removal, "escapes" and scurries back on plane to reclaim seat. 
Come now Doctor...you certainly have a right to be unhappy about being notified you will have to take another flight due to overbooking. But resisting physically resulting in your "list of injuries" and lawsuit certainly suggests you initiated the physical exchange as compared to the other three who left the plane without incident. If it comes to a Jury decision...this will be an interesting one to watch.