Some other handy tips....
Helmets come off easier if you unbuckle them first.
Also, first socks, THEN shoes.
Underwear goes UNDER pants--I have a mnemonic to remember that--"It's UNDERwear for a reason."
Seriously, I never thought getting out of the flight suit was a difficult part of swim qual. This is probably because I was in too much agony to give a crap about how uncomfortable removing the flight suit was.