Without actually going into Dales head and reading his brain I bet I can still tell you why you can now leave when not alll the way down?
remember not too long ago someone asking on CH 1 for a "mercy shoot" as they accidentally opened their chute at say 10,000 feet? I remember all you chute shooters would let them hang there just to be cruel. (explain that anyway, you shot the chute to be cruel, then leave another just hanging there to be cruel also??)
point being, some vets still made that mistake... imagine a newbie not knowing any better and bailing out of his dead airplane at 20k?
so here's our typical 2-weeker, floating down for about 30 minutes, unable to do a thing. he doesn't know better, and might never learn as he might not want to pay to sit in a chute. his short experience in the online game may be spoiled by this.
as for the accidental vet, he could always ALT-F4 out, then re-log.... but I'll bet that played heck with the stat and login servers, as a quick guy could probably ALT-F4, restart the game, and pop back into the arena before the server knew the first connection was truly lost.
also didn't ALT-F4'ing do funny things to the video in game... leaving artifacts,. or something?