Saison strains need to ferment at temperatures above 80*F to create the correct flavors through the yeast.
If you look up threads dealing with saison strains (wyeast 3724 and 2726
Also on Wyeas't site
you will see that this strain's temp range is 70-95F. It is also notorious for sticking at 1.035. Simply rousing the yeast and warming up the temperature will get it going again.