Occlumency, Narcissistic!Snape?

[pippin_999]

No: HPFGUIDX 127535


In all of the traumatic memories dredged up by the Occlumency
lessons, there's one figure we never see -- Severus Snape!

I couldn't believe this when I realized it, and I had to recheck the
canon to make sure, but this is blowing me away! It has got to
be significant, but how??

Possible answers:
 * The legilimens can't probe any memories regarding himself
personally 

* Harry's memories of Snape aren't that traumatic

*  Harry's a much better occlumens than he thinks, and is able
to unconsciously block memories of Snape

* Snape is deliberately avoiding those memories. That would really
blow Narcissistic!Snape out of the water, wouldn't it? Could a 
Narcissist really consistently avoid reliving his moments of triumph?

Thoughts?

Pippin