Cragar is going to look around and see if he can sell a knife to somebody.
Cragar, standing in front of a warehouse currently in the middle of being raided by the cops, looking for someone who might want to buy a knife:
Wæs se grimma gæst Grendel haten,mære mearcstapa, se þe moras heold
This was by way of saying that Cragar is basically alone in the street. Is he going to wander off to some more populated area?
Yes, then he makes his way back to the bar.
Got it. What's Gruum doing?
Gruum figures this is all done with, so he heads out. He doesn't go directly back to the bar, instead, he heads off to get a drink that doesn't taste like pig piss at another nearby establishment. On the off chance, someone seems their ally gathering suspicious, it'll help throw them off and it'll give him a chance to get a drink that isn't as likely to double as mop water.