Update. I just pulled the bike out and did a couple of things:

1. With the cable I loosened on the ride to stop the left pad from clamping, I put that back into place and tightened.
2. I bent the left spring to no avail. I then bent the right spring and I seem to be back in business. Now both sides seem to be clamping and releasing as expected!

Still going to drop it at the LBS for a tune up, but at least the brakes are back in functioning order and I can ride as needed without the drag and without foregoing front brakes.

Thanks for all of the advice on here. With your help, I was able to fix it!