Just a matter of perspective but from the video, it appeared to me:

BBD was flying lead and did a pitch up and left bank in a pretty standard looking fighter break. The Skyraider then pitched up in sequence. He appeared in a pretty steep bank and my guess is lost sight on BBD. The right wing then struck the tail of BBD yawing it severly to the right. BBD then semi recovered and it appeared the canopy departed. The Skyraider went into a right aileron roll and recovered. BBD is then seen going down and the pilot's chute opening. A difficult situation for all concerned, while I am sadden by the loss of a great old plane, I am glad no person was lost.