What I did was just make a quick dip into the acetone and remove it. It worked. I was able to finish the project I was using the Sharpie on. I don't know how long it will last, but it saved me a trip to store today and that is good enough. Finger nail polish remover containing acetone should work also. I hope this helps someone else.
I like projects that cost $0.00 :-)
4/7/14 Edit: I tried Petrucci's method of refilling Sharpies with hypodermic of 2ML of acetone. I injected it at the rear through the plastic case. I pushed it through with syringe empty, pulled it out and filled it with the 2ML acetone and then injected it.
BE CAREFUL & DON'T INJECT YOURSELF.
It takes quiet a bit of pressure to push the needle through the plastic, so there is a danger of bending or breaking it. I found the needle penetrated better if you turn it while applying pressure. I plugged the hole with Dap silicone calk when I finished.
The injected pens are working as good as new or better than new. This has been a great experiment, and with the help of
Petrucci, it has been very successful.