Remember the slide pack has to drop at least 2 feet in order for the lanyard to tighten and deploy the slide. With all the snow, it may not have had room to "jerk" the lanyard. And, it looks like the tail was resting directly on the ground or a snowbank. Either way, do you really need the slide when the passenger can just step out? As far as the forward doors. Latest pictures look like exiting from forward doors would have dumped you directly into the bay. It's a little chilly for swimming. Amazing that we have had two evacuation incidents in two days with no severe injuries. We can all be thankful.