When I was testing NoInterrupt, I was casting a spell, take off running, stop and wait for the spell to land. Turn around, and do it again.. Sometimes using /speed to get further distance..
Well, I turned around and there were 2 GM's. The first one asks me "What are you doing?". I replied "Running from that Ogre. He wanted to eat me!" (I was a gnome).. We had about a 15 minute RP conversation while she turned me into all kinds of forms.. (Including an Ogre myself) Then said she'd give the Ogre enough milk and cookies to fill him up so I wouldn't have anything to worry about.. She gave me some brew to "calm my nerves" and they both left. Mind you, NoInterrupt basically does a warp back to the original location to finish the spell, then warps you back to where you were. It's quite possible that they had suspicion what I was doing, and if I panic'ed and camped as soon as I seen them, I would have been busted. But since I remained calm, and joked around with them, they played along and let me be..
It was a low level test account so I didn't really care, but I still have yet to get as much as a warning on my accounts..