The majority of the drivers immediately dived into the pits for a change of tyres, and Kubica's lollipop man
gave him the all-clear too soon.
"There wasn't anything I could do," Sutil added. "They released him into my path and I just crashed into him, and my car was damaged too badly to continue."
Kubica was initially able to return to the track, only to be handed a 10-second stop-go penalty for an unsafe release from the pits for which Renault were later fined $50,000.
The Polish driver failed to express any sympathy for Sutil, but rued his own exit from the race a few laps later.
"I saw the lollipop go up and I started to go but unfortunately we collided, forcing me to retire with damage to the front suspension," he said.
"It would have been nice to have at least finished the race because there are so many Polish fans here.
"Looking at how the race evolved, we could probably have got a good result."