Sorry, this product is meant to be a permanent adhesive and not a water soluable adhesive for free motion quilting. Unfortunately, at this point, you have nothing to loose but to try and wash it. As long as you followed the batting manufacturer’s quilting instructions, you should be able to wash it. I use 100% wool batting for all of my personal use quilts and they are used and washed regularly (Quilters Dream wool).
For future projects, only use temporary, water soluable adhesives, made specifically for free motion quilting. The only one I can recommend, based on personal experience from when I had a sit down longarm, is 505. It doesn’t gum up on the needle and washes out with the first wash.