Was there a collapse of the left MLG as a result of a heavy touch down to compound the pilots' difficulties?
Well, how did the gear door get left on the runway if there wasn't a collapse?
Once the port main gear collapsed, the dragging wing tip took it off the left side of the runway.
Did the side load limits get exceeded on this flight, or was there cumulative damage from prior events that did not result in collapse?
It is a rather challenging flight environment after all.