What is Craig referring to here?

Speaking at the stage end, Breen said it was something that could have been “very easily avoided”.

“All hell broke loose. I had a dodgy nut gun which didn’t help either,” he explained.

“I was thinking there would be more people who’d get punctures on that stage. Every time I drive an R5 car I seem to have problems like that, and it’s through no fault of Pirelli.

“It could’ve been very easily avoided to be honest with you, but that’s how it is.”