By the letter of the law, Vettel was guilty.
He either crowded another driver off the circuit - Hamilton into the wall on the exit of Turn Four, to the point where the Mercedes driver had to anchor on the brakes to avoid a collision.
Or, as his defence said, his natural momentum took him across the full width of the circuit. But in that case he is guilty of rejoining the circuit in an unsafe manner, as he was not in full control of his car, to the extent that he ran Hamilton off the road in an unsafe manner.
I like Palmer’s analyses, but he hasn’t convinced me here. How was Seb supposed to rejoin the track “safely,” while sliding through grass?