Excluding single user from global Remote Desktop Session Host setting

I'm having a problem with printers and remote desktop (terminal server).

At the moment, I have set the Session Host settings to not allow default local printer to be set as default in the terminal-session. The opposite was done via GPO earlier. After applying this setting through session host, only ONE user still has a problem with print on the terminal.

This user is the only one having his local default printer connected via USB. His local printers get mapped to the terminal-server, and he is able to select the same printer as default, in his session (which is just like it should be). For HIM and only HIM, the default printer on terminal-server resets every time he logs out and back in.

Could this be related to his USB printer?

Is there any way of bypassing the session host settings for only ONE user? Which in turn will force his locally attached USB default printer to be his default on the terminal server?

Could/Should I apply a specific GPO for this user ONLY?

Any thoughts are most appreciated!