Yes i had to release my kite into some trees the other day, i was being really stupid & lazy and not untwisting my lines after spinning around (like i normally would) It got to a point where i did'nt know which way i had to spin the bar to untwist the lines.
So i just gave it a big spin in one direction (the wrong way of coarse & my lines got more twisted) I had stopped in the water by this time, so I grabbed the bar again and by this time the lines were so twisted they were really catching together. it made it hard to steer the kite, which was flying to the right side by now. I tugged left on the bar to bring the kite back up to the neutral position. But the bar just stuck there to the left, because of the twisted lines. The kite began to do a big powerful loop... So by this time i had stopped in the water about 20meters from shore, board still on my feet, bar stuck hard to the left and the kite heading into a loop which i was to late to take any control over. As soon as i felt the bar stick there and the kite beginning to loop, i knew i was in for it. It yanked me forward and over the board and i was heading toward the shore. I reached down and pulled the safety as soon as i could. But by this time i had been dragged right up to the sand and I stopped about 5 meters from a retaining wall. I was riding with a suicide leash so when i pulled the saftey it completely dumped the whole rig. I watched my kite fly off into the trees, which i am glad were there, otherwise my kite would have travelled a lot further downwind over some rocks, past a canal and into someones backyard....

So this whole incedent, which could have been worse, would have been avoided if i wasn't being so lazy & half arsed. I was very lucky no-one was in the way of me, the kite, or the lines. I'm lucky all i recieved was a battered ego & a small hole from the trees in my kite. I'd had a **** day and was probably not in the best mood to be out kiting, because i wasn't thinking 100% about what i was doing.
The next day i focused myself, took my time and ended up having the best session i've ever had kiting.