Notice how the parachute bridle is only attached to the upper member of the spar? So in the event of a deployment, all the welds would be in tension with several g's applied in one place spot on only one of the three tubes that make up the spar. I can't imagine that turning out very well. I hope maybe there's another section of the bridle not shown that extends down and connects the bottom of the fuselage or some more substantial piece of the air frame, but it sure doesn't look that way. Yikes.