You rightclick the pumpkin hh leaves a couple of times quickly and then choose chat option asap. So you'll end up with smashed pumpkin loot bag and window with smashing option. Just loot the bag and smash againCombined with http://www.mmowned.com/forums/wow-ex...rooms-etc.html you can smash it like 20 times
Not sure if its possible without lag but its not a problem when the pumpkin is up anyway