I didn't read all the posts, so someone may have posted this hint. I'm an experienced ripper...and here is my way to "speed rip". I have a little clamp that I bought from a sewing supply that works like a third hand, to hold one side of your fabric. (But you can fasten one side of what you are "unsewing" to anything stable if you don't have a clamp.) Then hold on to the other side of the seam with your free hand (the one not holding your seam ripper), pull it tight and pick away at the seam with your seam ripper. You'll have to keep moving the fabric in your clamp as you go along, but keeping that seam tight and pulling it apart exposes the stitches and also pops several stitches at a time since you are holding everything taut. I learned this from my mom who used to pin a skirt that she was hemming to her own skirt, holding it tightly so she could hem faster. But I found it works for ripping too! :-) Happy ripping!