This Snape hater accepts Snape is good-ish

[Hagrid]

No: HPFGUIDX 137959

-aussie-
Dang. I don't like Snape. I have trusted Harry / Neville and 
Sirius's feelings for most of the series, but there is one point I 
can't get around.

If Snape is a full DE, Snape will tell LV of the hunt for Horcruxes 
now. 

If that happens, alarms would be set at each site to kill Harry ... 
or they will be hidden more thoroughly than they have for the last 
50 years. 

Since JKR is not planning another 50 books, but wants to wrap it up 
with #7, ... I'm sorry to say this, but ... SNAPE IS NOT EVI- ... I 
can't say it (wimpers).

DID SNAPE KNOW ABOUT HORCRUXES?-
Snape would have to know what kind of injury DD had the first time 
DD cured him after the ring.

(HBP ch 23) 'Yes indeed,' said Dumbledore, and he raised his 
blackened, burned-looking hand. 'The ring, Harry. Marvolo's ring. 
And a terrible curse there was upon it too. Had it, not been - 
forgive me the lack of seemly modesty - for my own prodigious skill, 
and for Professor Snape's timely action when I returned to Hogwarts, 
desperately injured, I might not have lived to tell the tale. ..."
(part 1)