I would say call, and politely say that you would like the multistop itinerary changed to a single stop as it was before. Take a look at the schedule first to see what pair of flights works best for you that day. In case they tell you no, which I would be surprised about, try calling back again.

You will want to wait till these storms end before calling. Even "high rollers" like me have to wait on the phone these days, and the presently non-functioning Website makes us all even more equal in the eyes of Delta