I counted 2 left front lockups for Vettel during his battle with Bottas late in the race, and think a couple more after that when he was under brakes and the tyre kept finding the flat spot. I'd say it was the cause of the blow up.
Raikkonen's tyre.. well it simply "broke".
Video of the big lock up.
https://youtu.be/t0WHNqwDjXc?t=4m