It's possible to remove the clip by just pulling the motor out until you can access it, but it's not easy. Installing it later is also tricky.
But removing the cowl is also no fun. You have to remove the lower w/s trim...
...the wiper arms (easy), the ~5 screws across the back of the wiper valance & ~10 across the front (under the hood), and then work the valance out without scratching it. The antenna wire just pulls straight out of the bottom, so don't mess with the mast.
While you have it off, hose out the debris down in the cowl drains. You can barely reach them from below, and it's gonna be nasty.