Wondering if more stitches per square inch would have prevented a lot of those tucks and pleats? I admit that I'm a bit OCD when english paper piecing making 12+ stitches per inch, but haven't had wrinkles like that when the templates are removed. I really don't know what I'd do in your situation except try the suggestions already given, and though you may not be able to get them all out the quilt will still be lovely! From what I can see the colors and fussy cut hexies are beautiful!