Halloween is at that end of October. The weeks before Halloween were a great time to buy UGAZ, if a trader sold it on the November spikes. Anyone who held until now is not too happy, but that's because they held.
It all depends on how cold it gets and for how long this winter for this UGAZ trade. Always has and always will. This current drop could be creating another trading opp, as winter hasn't even started or it could turn out to be a bust, if winter is a no-show. Everyone has to make their own trading decisions.