Toby,
If you want the service2 to run regardless of success / failure of FTP service—
wrap the FTP service call in a different flow service (say service3), handle all the error conditions of the FTP serive in the service3 and always exit with signal-SUCCESS.
That way it will always execute service2 regardless of the output from FTP service call.
Let me know if this helps.
Shantanu
#Integration-Server-and-ESB#Flow-and-Java-services#webMethods