No problem still works fine. Disabled server service, and stopped it, which also stops the netlogon and DFSnamespace services, reboot, and logged back in from the console.
There should be no problem doing so. The server service allows the server to offer "server services" like file and print sharing. It enables SMB and allows connection using "named pipes" which is why you are unable to connect remotely with those tools. It will not block you from logging on. Have you "modified" anything else?
Restarting in safe mode only disabled unnecessary drivers and stops unnecessary services, it won't start additional ones allowing you to connect and thus there is no need for safe mode.
You can try connecting using the tools I mentioned by using the IP. They work fine with IP's but probably will not in this instance. I would just get someone at the site and walk them through logging on and restarting the service.