Been there done that...mark it up to "learning Experiences"...find a similar piece or use the back?...sorry not what you want to hear

Hey Beebee I've done it too, and I put a piece of freezer paper on it and ironed it. I did small sections at a time and would keep using fresh pieces of paper as the wonder under would stick to it. I finally got it all off an was able to use my fabric again with the wonder under where should have been in the first place, on the back side. Hope this works for you.

My cousin spilled this on her clothes when we were working on some crafts and this is what we did..and it worked..
Take a piece of clean cotton and place the pocket face down on it. Press a hot iron on the pocket, pressing for a bit longer than you did to adhere the applique. Peel it away from the cotton. Move the cotton over to a clean spot. Repeat until the glue has been absorbed into the cotton. (You can do this with wax too). Hope this helps you.

Thanks to all....I was thinking about using a hair dryer, but will do the hot iron thing...thanks thanks...my day now looks much brighter