Snape's task at end of GoF

[davenclaw]

No: HPFGUIDX 132736

Did OotP ever resolve the task that Snape was sent off to perform at 
the end of GoF, and I somehow missed it?  The only hint I remember in 
OotP of Snape's job is when he acknowledges to Harry that his job is 
to keep tabs on the death eaters and LV.  So was his task to run off 
and feign devotion to LV?  Is he pretending to be a death eater?  
Seems odd since LV indicates that he fears Snape (I assume) is "lost 
forever" and "will be killed."  I doubt he'd believe Snape... so what 
did he run off to do in GoF?  Start brewing some potion for Lupin to 
be an effective member of the order the whole month long?

- davenclaw