First and foremost, don't attempt to adjust the doohickey now by loosening the adjuster screw!! It's clamped in place and you don't want it to move..
If you've been riding the bike and haven't noticed anything funky, you're fine (other than you need to do the doo NOW)
I've never put in a torsion spring, and my guess is that Eagle Mike will be able to tell you what he's more comfortable with, since he sells them and has done tons of doo changes himself.
Again, don't loosen your adjuster screw!!
Order your parts and take care of this as soon as possible. Personally, I wouldn't ride the bike until you have it changed, but that pc of spring could have broken off 1000 miles ago..
Don't loosen the adjuster screw!!