I doubt it. The 8th shawl stroll is nowhere near the zonewide disruption event that the 10th ring is in GD.
It is my understanding that player X can sit by the final turn-in NPC and wait for player Y to finish the event. Then player X can turn-in his 7th shawl and player Y is screwed.
I started the shawl quest about 3 weeks ago and finally got all the meat(Snow Griffon Eggs need to drop more often) n stuff for Shawl #3 and when I turned in Trita's Napkin and the Snow Bunny Stew, she ate the stew and gave me faction and experience but no used napkin .
They could easily address this problem by having Commander Vjorik drop a head and requiring the turnin of the shawl plus the head. Technically someone could KS the commander but this is a lot less likely to happen than simply being faster at turning in an item.