Chris Hayes, subbing for Rachael, said at the end of the program that she would be back on Monday.

It was interesting that immediately after that show, CNN's Anderson Cooper spent the 1st 20 minutes of his show exploring what was going on.      
Everyone agrees that 1)it wasn't totally unexpected, 2) Keith will no doubt find a way to state HIS side of it and 3) that MSNBC really needs to keep their basic format that Keith defined.