Rare Capture of Panto Lowering and Raising on a Moving WAM4 (Jan 2000)

A short video on something that I have seen only once - pantograph lowering and raising on a WAM4 in motion! Our train - Patna-LTT superfast - had departed from Niphad, after an unscheduled halt, and I was focused on the WAM4 in charge. Suddenly, the rear pantograph was lowered with the loco travelling in its own momentum. The pantograph was raised again after which the train came to almost a dead halt in order to let off someone from the cab. Was some kind of testing going on? Note: This is not in a neutral section, since that has a more complex OHE arrangement. Moreover, LPs don't lower the panto while passing through a neutral section. Rather, they simply turn off power to the traction motors.