Yes, pitty indeed...

The possible solution involves GCJ, as described here: http://www.scriptographer.com/forum/viewtopic.php?t=204

This would mean no JVM is needed anymore, so theoretically Rosetta could run the plugin in emulation. But in the meantime I found out that a system call used in GCJ avoids it from running under Rosetta too.

But there is a little hope: http://gcc.gnu.org/ml/java/2006-05/msg00241.html

We will see if that will work or not. Unfortunatelly there seems to be noone volunteering, so I guess I have to do it once I get my hands on an Intel machine. Now that's a reason for collecting donations.