Take some video of you doing Door Frame Drill, play around with rear foot placement, distance from frame and foot angle (rear toes should be somewhere around 6" offline from door frame and front toes on the line/inline to inside edge of door frame). Either you have mobility issues or you not are working deep enough into the drill and fully loaded/coiled and completing the backswing. Your shoulders stop turning back early/short and start going forward too early. Your rear foot also appears to spin out during the stride turning more backward and ending up more horsestanced.