My vacuum for the theater room has a wand with a variable valve adjustment (a smaller Dirt Devil). I wet the cone with a sponge, and then as I ramped up the vacuum level..it grabbed first one section pulling it out perfectly, I repeated this about 4 or 5 more times. You can tell it was ever pushed in. I'll post a picture after it dries, but voila it worked!
Thanks Audiohack!
I was careful to open the wand valve slowly and turned it on and off as I moved over the spot. The other places I had found about this method all concurred on one thing; dont place the hose over the cone with the vacuum on high; but try to use a proportioning valve. That said, the method works like a top.