But i heard someone say somethin about a puncture (don't quite remember if it was from team radio or the commentators). In that case the slip from Stroll wouldn't even be his fault.
Stroll said it. But Stroll is also the guy who "didn't understand what's wrong with the car" in Monaco when he had a front left puncture. So I am not sure I'll take his word for it. If his left rear suddenly went flat in that corner, I don't think he'd manage to save it.