I'm also in the middle of a suspension swap, and you're right, there is no proper way to remove the front struts without removing that bolt. However, I managed to remove them with the help of spring compressors and a lot of muscle work. It was a pain in the arse, but it worked without breaking any parts. If you don't have spring compressors, I believe you can rent them from Autozone and other parts shops like them.
