wvnutt... most furling sails are attached to the furling foil by threading their leading fabric edge into the wider opening slot on the lower portion of the furler while someone else hoists the sail.
The small wire on the back stay is designed to hold the main sail boom out of the way. Once you hoist hour mainsail then you need to detach the wire clip as the sail shape itself will hold up the boom.
Here's a manual for your boat and a good class association in case you are interested. Have fun!!
Catalina 22 Owner's Manual for 1987