I disabled Legato through my raq's control panel, but top shows the nsrexecd daemon is still running anyway.

Can it be shut down without harm? And how to do so, and keep it down?

Ok, I'll be answering my own questions:

To see of you're running this thing, type:
/sbin/chkconfig --list
and look for something called networker

To stop this legato daemon type:
/etc/rc.d/init.d/networker stop

To keep it from coming back at the next reboot, (re)move that networker file from /etc/rc.d/init.d/

Thanks ;)