What happens if you accidently hit the remote button on your way to the handle? 
That's why I peg the safety thong to the ground with a big screwdriver. The theory is the plane will just nose over it there is a malfunction.
I haven't tested it yet. Which is to say neither the pull cord nor the 2.4G has failed me yet.
Well, the have failed SAFE, which is to failed to release, but I haven't had an unwanted release yet.