How many times has he said this now? Of course the HMs haven't put him up, he's perfected the art of manipulating the HMs into nomming other people to avoid being put up himself. He seems to be very resentful about it, just as Mario was when he was up in the S&R task. Dave seems to have a sense of entitlement to stay
Even now, watch him on LF trying to manipulate the viewers whilst talking to Ben "your supporters and my supporters will probably get together and vote Andrew out as he's only been here a short time". Sorry Dave it won't work on me, I'm sending half my votes your way, and the other half towards Josie's "brother".