yes, that sucks man. i re-kited an E5 a few months ago...ESC went up in smoke and somehow managed to fry my BEC in the process (guess the wires arching). just had to watch it fall....bad feeling...
Saturday, that same E5 (the re-kited one with the same electronics) went in too. pack came unplugged doing aileron tick tocs....WTH! lol i have to be the luckiest dude in the hobby though. it only broke one main blade, a boom support, and bent the head axle....the head axle was bent at roughly a 30 degree angle though, so i replaced the whole head just to be safe...
it really sucks, but it is part of it! enjoy the re-build man!