Do the Death Eaters know Snape is with the Order?

[joanne0012]

No: HPFGUIDX 68356

--- In HPforGrownups at yahoogroups.com, "sibel_saya" <sibel_saya at h...> 
wrote: Voldemort knows the Snape has left as he 
> said at the end of GoF but you never know he might be talking about 
> someone else. Anything is possible in Harry Potter.
> 
> I don't know whether I've missed something glaringly obvious and 
> important, and if i have feel free to point it out for me.

Voldemort never said that he knew Snape "had left us."  He never used 
Snape's name, so we don't know who he was referring to.  Since not all the 
DE's at the meeting were named, for all we know Snape was there, 
pretending to be loyal.  The relevant text from Book 4 is deliberately vague:

"And here we have six missing Death Eaters . . . three dead
in my service. One, too cowardly to return ... he will pay. One,
who I believe has left me forever ... he will be killed, of course
. . . and one, who remains my most faithful servant, and who has
already reentered my service."

Snape could be any of those last 3, or none.