Engineer was in too much of a hurry to wait for the turn table to line up.
Maybe the engineer thought his “extra” flags gave him priority over the turntable.
The photo of the North American locomotive burst out of the roundhouse is an example of a “night crawler.” There was a problem with the throttle linkage that allowed the throttle to open as the locomotive warmed-up. This caused roundhouse “break-outs” and unscheduled jaunts along the right of way sometimes, until the linkage was corrected.
Best, David Meashey