It looks like the driver swerved out to avoid where a tree's roots made a slight narrowing in the road, but around the same time, the cyclist moved away from the other cyclist, and closer to the car.
The problem seems to be in allowing TV cars to travel among the riders on such narrow and unpredictable roads. The cyclists should NOT have to be constantly on guard in case a TV car makes a mistake, they have a hard enough time racing and avoiding the other competitors.
Either only allow TV motorcylces (take up less space, and who's occupants are just as vulnerable as the cyclists, which should be an incentive for them to take more care), or insist that the TV cars go ahead and film from their rear when the roads are so narrow.
With those cars taking up so much space, surely they are affecting the race as cyclists can't overtake each other in case they are hit by a TV car. This may have been why this cyclist moved over, to overtake the one near the fence with enough clearance to prevent them from colliding.
The TV car's driver didn't seem to have the necessary skills and experience for this type of driving, else he would have ensured he was never put in a position of having to swerve towards the cyclists at the last minute.