I don't know if this is a glitch or not. When you have on x-ray visor when going up the elevator after getting Nova, the visor cancels out about midway up the elevator for no apparent reason. This might happen with other visors too.
hm, now I've gotten the security station glitch a few more times. It has nothing to do with the instant morph; I think all you need to do to do it is to get the door to the containment area open as soon as possible before the guy gets a chance to finish saying "You'll need to pull that lever to enter the containment area".