Harry getting Unfrozen on the Tower...

[zgirnius]

No: HPFGUIDX 155450

> Marion:
> Ooohhh, that's interesting! Do you think the look of hatred and 
revulsion was because he realised that Harry was there? 
> Hah! And so many fans are argueing wether the look meant loathing 
for Dumbledore or whether it was meant as a look of self-loathing. 
But there is only one person Snape loathes (and yet saves time and 
time again) Hah! It would be very Harry-like to misread the situation 
and Snape's bodylanguage.. Cyrill is quite right about misreading 
Harry's opinions for reality.

zgirnius:
No, I don't think the look was for Harry (I can't speak for Carol, 
though...<g>). I think Snape figured Harry's presence out (or at 
least, that it was highly likely) the moment he showed up on the 
scene. Draco noticed the broom...so of course Snape would catch that 
detail, we have plenty of evidence that he is an obervant person. 
And, logical man that he is, I think he could make a good guess as to 
who would have been going on a mysterious errand with Dumbledore that 
evening.

Nope, I think the look of hatred and revulsion was a reaction to a 
suggestion/order Dumbledore communicated to him via Legilimency. He 
looked at Dumbledore, got the expression of hatred/revulsion, and 
still did nothing. Then Dumbledore (seeing it? interpreting it 
correctly?) said "Severus, please". Only then did Snape raise his 
wand and kill him.

I don't think that the similarity of the feelings shown on Snape's 
face on the Tower, and the feelings reported by the narrator for 
Harry in the Cave ("Hating himself, repulsed by what he was 
doing...") is a coincidence.