Some restaurants use meat tenderizer which can have sugar and/or modified food starch in it. I also read somewhere that some places brush sugar on steaks so it will carmelize and make darker grill marks.

I'd go there just for coffee and the cheesecake!

I'm adding this after looking at their menu which says the steak includes 2 low carb sides. Maybe the sides are included in the carb count for the steak?