The incidentoccurred after Emirates Team New Zealand helmsman Peter Burling had done a good job securing the favoured leeward end of the line and shutting out Ainslie and the Land Rover BAR boat.
As the Brits bore away they plowed into the back of the Kiwi boat.
While Team NZ boss Grant Dalton did not believe there were any sinister motives behind the collision, many sailing fans appear to disagree.
Dalton told Newstalk ZB's Mike Hosking this morning that while Ainslie's actions were reckless, he did not believe they were deliberate.
"Ben just mis-timed it, and he hit us. He was 100 per cent in the wrong and it's one of those things - it just doesn't normally happen in the warm-up lap," he said.