Reverse health monitor not working

If a health monitor normally shows green when it connects on 1021, but then the monitor is reversed, then I thought it should be green if the LTM can NOT connect on 1021. Or, perhaps I do not fully understand how 'reverse' works.

Yes, I could use a disable string, but this is not the preferred option because a Windows service is required to make the server listen on port 1021, and the server administrator does not want to have to run that service 100% of the time when the server is in production.

The ideal configuration is to only run the Windows service (to serve on port 1021) when the server is to be taken out of the LTM pool for maintenance. This server (a Citrix server) does not have an HTTP server so I can't check for a receive or disable string on port 80, which would be ideal and easy for the server admin to edit/change via scheduled script.