Stuck on super glue the extra strength type how to remove it? 4 Charity Event?

How do i remove extra strength super glue/adhesive its water proff drys in less than an hour as hard a rock it clear.Bt i need to remove it from 3 types of fabric without leaving a oder if possible.The biggest problem is I had to Glue in the heel of many expensive sneakers for my son heel grips because they were flipping in the back

Heel grips http://youlookfab.com/wp-content/uploads/2009/03/h...

he has wide feet so we use these as a solution. But the adhesive that's on them never works .I was able to remove all but one pair with out any leftover clumps of super glue.I am donating all the sneakers barley warn for a local charity yard sale.Like said they are a hard to find size 12 and 13 men's brand name Adidas, shell toe Adidas ,Timberland boot, Nike Shox, But they cant take them with the blemish worst part is 3 of the 4 have only been worn 3 times , 1 hasn't been worn .So i know they will bring in a nice price. All in there original box with there original tags with upgrades on laces. The kids like those RUN DMC super fat laces on

the Adidas &

the have them on there to match http://bboylaces.com/images/medium/20mmblack2_MED....

and one has The New England Patriots Sneaker Sports Charms for

Laces

http://www.sportskids.com/superstore/Decorations/N...

yes Im In Boston.

So plz any advice how to remove the clumpy super glue without leaving an oder or tearing fabric. My items would really be big ticked items .So any help would be so greatly appreciated and i apologize fo such a long detailed winded posting but it important

Thank you G's Mom