The vertigo is an exit sensation also- you can call it 'synched vibrations' (I sometimes call them 'end stage' vibrations also). When I get those I try to 'go' with the wave, just like you would if you were bodysurfing- try to synch with the movement and propel yourself with it. You are practically there, btw.
ps. The visual snow is a symptom of a third-eye exit, and you can phase with that also, by trying to control the vision- 'focus' in, if possible. You may feel sucked into the picture- this would be a direct astral projection.
Either way, you're practically there.