Using eye protection, you can drill out the nuts below, or use a hack saw blade.
They also make a drill bit that will cut off the nut.
Also, you will need to replace your shutoffs at this time. Those stops with the soft copper are "one use only".
Any more bending can cause them to crack. You can change them for less then $20
A lot cheaper then if they finish cracking while you are at work, then it can hit $100,000