Its always the same. Straighten what you want straight, locally relax the rest to follow that straight edge. You could pin it, or like i do, just exlcude it from your selection
Great thanks! I was able to install it and assign it to a hotkey and put it in my toolbar. However when I'm in my UV editor and I select two or more verts and then run the toggle for the script nothing happens. Am I using this wrong?
Rightclick, break is the option you are looking for. Select the edges and break em, then move the islands apart And you shouldnt need to move points closer, just raise the weld treshold. If yiu set it to 1 you should be able to weld everything in the 0-1 range into one clump :)