I am almost through reading this very enlightning report and discovered in footnote 129 that the polish commission has indeed come to the conclusion (from circumstancial evidence) that the PIC pushed the go-around button after his go-around command at 40m(!) QFE (shortly after the 2nd "100m" call of the navigator).
According to the Committee, the pilot attempted to execute the planned go-around maneuver using the ABSU system, by pressing the ―go-around‖ button, and was surprised by lack of aircraft‘s reaction to his action. Deactivation of the autopilot (pitch channel) occurred after 3.5 s, by overriding its operation (by pulling the control column backwards), after which the aircraft commander increased thrust and initiated go-around procedure.