Great to see 3 of these awesome little EDF jets go up together. The temptation to fly through the gap in the trees was too great for the pilots. They nearly all made it through. Nearly. 

Not the Pilot's fault!

Speaking from hard experience:

As a model aircraft approaches a tree, the branches, full of Dark Magic, stretch out towards the model and grab it! 

Yup...have had it happen to me at least twice in my flying career Sanjay. All part of the flying hobby.