Sounds like you’re going to need to swap the voice coil, cone, spider and surround or if you can find a replacement driver, that would be the easiest and quickest option, but unless you can find the exact same replacement driver, the sound won’t be exactly the same since the crossovers and drivers are designed to work together.
I can’t think of another option. Places such as Parts Express have a good selection of inexpensive drivers!
Hopefully the frame is not bent, if you decide to fix it.
For uniformity, I would highly recommend repairing or replacing drivers as pairs, regardless of what option you choose. Good luck!