A bit of a newbie, relatively, in terms of F1 knowledge. I was watching the Brazilian GP replay today and spotted this during a Ferrari pit stop. Note the crew members grabbing the car near the roll hoop.
It’s actually a very uncommon thing to do. It’s the first time I’ve seen anyone do it, so I can only speculate about what they’re actually trying to do.
The first thing that springs to mind is the driver (Massa?) has reported an unusual vibration, or the team has picked up some strange telemetry. The camera mounting – the T-shaped contraption they’re grasping – may have come loose, and they are trying to fit it back in its proper place.
The other alternative is that it has something to do with KERS. When the car is parked in the garage, KERS is grounded through the airbox (which is why you see those bright orange caution signs). The car may have a KERS problem – perhaps something touching the grounding wires – that the team is trying to rectify.