Well I took a sample today and fermentation is going well since pitching the dry yeast. SG is down to 1.044. I tasted it, and surprisingly, it tasted really good. There were no off flavors or any signs of infection that I could find. Just have to wait and see how it all shakes out after fermentation, but I think I saved the brew. Good lesson for me to always keep on hand some dry yeast for an emergency.