Can you slip a piece of fusible underneath the cuts and fuse the edges together? Are the cuts in parts of a pieced block? I had a seam blow out bad on a pinwheel quilt that I didn't find until after it had been quilted and washed. I just removed the offending piece with my seam ripper then replaced the piece and hand sewed it in. I did have to remove a little bit of the quilting but was able to re-sew it with my sewing machine. No one can tell the difference!