I think it's pretty normal for volumes to decrease when there is a quarterly announcement pending, don't think you can call that buyer exhaustion. The Buy/Sell queue would give a better outlook if anyone has access to it?
The price is still going up so there is definitely still a demand for the stock, Volumes will continue to drop in the run up to the next update. Next week should be interesting!
GLTAH
GSW Price at posting:
$1.18 Sentiment: Buy Disclosure: Held