This is interesting news - Sun has fully open sourced Strongtalk, including the VM. From the site:
Strongtalk development was halted before it was fully productized, so considerable work remains to polish-up Strongtalk before it is ready to be used in real-world applications. But with the release of the virtual-machine source code, a whole new world of possibilities has opened up. What will become of Strongtalk? Now, the answer is finally in the community's hands!
I'm sure that our VM engineers will have a look, but there's no telling what can be gleaned from this.