I most certainly haven't, my own thoughts were similar to those posted above that this appears to be a loss a spatial awareness in IMC (my father lost a close friend in similar circumstances).
I am speculating that he was hand flying since it's a much higher probability statistically than the AP kicking out so quickly. Of course it's also possible that either the AP never engaged or that the accident occurred in part because he was attempting to set the AP (or asked his son to??) and his focus was split between aviating, post takeoff clean up (gear, flaps) and the AP...