I'd say that you want to be less stretched out, lower the saddle to stop the rocking (and then the bars by the same amount).
The advice given by Lance's old aerodynamicist is
a) get as low as possible
b) get your arms as close together as possible
c) train in that position a lot so you get used to it
Ignore the 12.5yaw angle; it's an error.
Black solid line = baseline position
Red line = 60mm shorter upper arm (the upper body is rotated at the hip to give a lower front end)
Pink line = forearms touching
Yellow line = forearms between the two positions