The video shows them inside the station.
I have a theory--that if the reverse theory is correct--that the force of purple train pushed the train into the station further back on the platform. 15mph isn't much, but with the weight of purple--it would be enough force to move a stationary object.
The outside pictures--I'm not sure how those came to be except at some point that they moved the trains to see if they could separate them and then put them back in the station when they could not. (Just a theory!)
But the
youtube video was pretty immediate on impact as guests are exiting the train and two men are seen going to check on passengers and then check on the cab. The photo on mouseplanet shows a cast member on top of the cab (I would presume trying to talk to the driver just in case?) and the guy in the black shirt with white stripes is speaking to monorail cast members and pointing at purple.
So the impact had to have been in the station. (The theory is purple was backing up thinking they were getting onto the MK beam and until impact didn't realize they were on the wrong beam.)
Wasn't the still photo outside of the station in daylight.