Actually it's easier than that. Apparently when you pipe the output of fuser, only the PIDs are piped. You can simply fuser the file and pipe it to 'xargs kill -SIGTERM'. You can check it out...
I need to automate this in a ksh script. How would one find the PID? I suppose I could use fuser and parse the output for the number. The user that will be shutting this process down is not unix...