Some SunRay users get their display reset. They want to set all
displays to 1280 and some SunRays keep getting set back to the default 
of 1024.

Is there a global config or some way to enforce 
the SunRay server resolution?

There is a global setting for the SunRay server resolution. 

go to /opt/SUNWut/lib

in that directory execute the following command

./utxconfig -a -r 1280x1024

This is the maximum supported resolution.

Make sure the patch 108303-xx is on the system. You will need this patch 
in order to save this global config after a reboot.