If you have the snake skins needed in inventory I dont see why they couldn't help you out. Unless you tradeded the snake skins after event ended. (OTM sees all!) No. I had the items before patch end but could not complete the quest (which means: speaking to the quest NPC and give him the 1000snakes...
I just arrived back from vacation and realized you patched out the old content. I farmed my last snake skins for the white hat. They were ready to complete the Quest but could not come online during vacation. Please please help me to complete my quest.