For those asking what happened:
It was a goal kick to Bolton. The camera was on the keeper. He wasn't placing the ball on the fround was instead gesturing to the middle of the field.
The camera then cut to Muamba on the ground with 2 or 3 people around him including the ref. One of the Bolton players bent to touch Muamba on the thigh in a comforting fashion but to me it looked like Fabrice was convulsing.
As soon as I saw it, the director must've done too as they immediately cut away never showing another camera shot in that area again. Medics ran on to the pitch, players walked away. Some bent down in prayer. Owen Coyle came on too. Crowd looked shocked. Both sets of fans chanting his name.