"I think the most concerning thing is when it is repeat incidents. If you make mistakes that's fine but the most important thing is to learn from them, said Horner. "He's hosing away points for his team. They're fighting in the constructors' championship - I would be surprised if they were impressed by that."
Someone else unimpressed with Grosjean's driving was Sauber's Sergio Perez: "The race didn't start too well for me either when Romain Grosjean
caused a mess and I lost positions," he said.
Mercedes' Nico Rosberg
also lashed out Grosjean, although the immediate cause of his own retirement from the race was a hit from Bruno Senna in the aftermath of Alonso and Webber's incidents.
"I got a good start, but Grosjean took out a lot of us again today," he said. "He spun Mark Webber
and caused a traffic jam. I had nowhere to go and the [Williams] behind me ruined my tyres. A penalty [for Grosjean] is right - but what sort of penalty is not for me to judge."
During the race, Grosjean was required to serve a ten second stop-go penalty in the pits for causing the collision, the most severe in-race sanction available to the officials to hand out.