Yes, something highly unusual is going on here. I can only imagine that the thrust levers were advanced as the aircraft touched down, possibly a late correction to what was being perceived as a 'firm' arrival. This action would cause the spoilers to retract automatically. If it was a 'touch and go' training detail then standard procedure would dictate that the spoilers were most certainly NOT armed on the approach!
In my airline, standard procedure was to leave everything in the landing configuration, apart from the thrust reversers, until vacating the runway. The stowing of the spoilers was the silent message for the first officer to start running through the after-landing checklist.