Not 100% sure, but I seem to recall that there is no way to get the chat back for that game. I'll run around and see if I can find some documentation, but don't hold your breath...
chat feature

Well, even a broken clock is right twice a day; for a change I found it and I was right.
How can I play without chat messages?
Simply click the "disable chat" link in the upper right corner of the Chat tab on your game page.
Once disabled, it cannot be re-enabled for that game.
keywords: chat disable

Thank you for the responses. The chat on/off warning does say that if you disable chat it
will be permanently disables "for THAT game" as you mentioned. However, that means that it should be back ON in a new game. This is not the case. I play regularly with a friend and his chat is OFF and not renewed every game as the warning implies and we cannot figure out how to 're-enable' it. When I ask for 'help' I am directed to pages of faq questions and answers. I want to ask the sysop or somebody running the site 'live'.
Should I go through the 'report a bug' process? Thanks again.....
I see how to disable chat (small icon in upper right corner) BUT if chat is 'disabled' how do I turn in back ON? I do not see any icon or place to do it. Thank you for your time. Sorry if I am missing something and this becomes a stupid question.