The most direct way (but maybe the most inflexible one) is to let bitfountain hold the shares for you. But they won't do it below a certain minimum (because of the involved management) and you won't be able to liquidate easily (because you can't put asks and bids) ...
You are pretty much at the mercy of glbse. Just pray friedcat doesnt annoy Nefario for some reason

Actually, you could sign a contract with bitfountain and hold the signed text instead of shares on GLBSE, as Jutarul said. This only works if you have enough shares that would make it worth friedcat's time. As long as the company continues to be listed and you have a direct channel to the issuer, there should be a way to find a solution. For instance, if ASICMINER did decide to get listed on cryptostocks as well, you could transfer your shares this way.