Haha, the pic was good. Sorry, house sitting at my parents house, all ****ed up watching The Killing with my 12 year old labrador.
There are some different ways to bust a head down. I use a press, combinations of sockets, then a deep ~19mm socket with a slot cut in it. Secure the head, secure the bottom of the valve, press the retainer down off the keepers, knock them to the side off the valve, and let the press off.