Jenson Button has questioned Seb Vettel's driving following the "massive blow" of being shunted out of the Belgian GP by the Red Bull.
Despite carrying front-wing damage, Button was secure in second place before a mistake by Vettel saw his Red Bull slither across the track and slam into the side of the Englishman's McLaren as he approached the final chicane.
The damage was so severe that Button was forced to immediately retire from the race and although Vettel was punished with a drive-through it was of little consolation to the reigning World Champion as he considered his prospects of retaining his title.
"It was a very strange incident," Button reflected. "I don't know what he was doing."
"It's a massive blow [to his title chances]. This one hurts quite a bit."
Button's disappointment was echoed by his team boss Martin Whitmarsh, with the McLaren chief suggesting that Vettel ought to receive additional punishment.
"To me, a drive-through seemed pretty light. But I don't think the stewards have finished their work yet."
An apologetic Vettel has conceded he was at fault - he could hardly argue otherwise - but has insisted that his mistake was nothing more than a racing indicent.
"I'm sorry. It was not my intention to destroy his race or my own. I was following him closely but I braked on the bumps and lost control."
