Hello everyone, and thanks for being patient. I spoke with the manager "Matt" and he confirmed that dinners are 50% off. This was after I told him that I had dined there on Monday and that the waiter had said something like that to me. He also told me to "remind the waiter" about the 50% off. So my guess is that this is NOT an advertised, so to speak, offer but rather an in-the-know kind of thing. Although it looks like I ruined that part of it. In any event, the restaurant is not permanently closing. They are relocating and won't be up and running for a few months - so they say.
Note: If you go, somehow make it clear that you have been there before and heard about it from the staff, otherwise I wouldn't guarantee the same %.