This is a glitch, it happens when you start sprinting and jumping on your pedestal before the game starts. NCP detects this and thinks that you are trying to fly off. We are aware of this glitch, but it's not a top priority at the moment. You can counter it by simply not moving before the clock hits 5-3 seconds.
I'm locking this thread now, since I explained what happened and told you how to counter this. Have a nice day and take care!