The remarkable incident, in which the Dunedin driver was taken out in pit lane by one of his competitors, is just one part of what makes the victory the ultimate tale of Kiwi determination.
Henderson did not just overcome physical adversity to take the title, he also overcame the odds - or more specifically, the dollar signs.
When Henderson stepped out of his home built Toyota Corolla and was run over, it was by a purpose-built Porsche car that can cost up to $400,000.
He already had the technological disadvantage of competing in his more modest home-built vehicle without the added handicap of a throbbing foot.
But Henderson, and his support crew of Tim Bentley, Aaron Carmichael and Phil Winter, did not let injury or any other disadvantage stop their car from winning the one hour series.
Henderson's pit lane calamity came in the second leg of the three race series in Christchurch and was a result of a rule that solo divers like Henderson must get out of their car to even the time it takes for cars with two drivers to swap seats.
``We come in and pit, so the boys open the doors and run around the car and get back in to make it even for guys that have two drivers,'' Henderson said.
``As I came around the back of the car a guy in a Porsche came in and ran over my foot.''
With victory in his sights the thought of the pain never crossed the driver's mind - he just wanted to go fast.
``The adrenaline was going so I didn't notice it.
``But I got in another car and drove in the three hour [race] later on and after about three laps I thought I wasn't sure if I could keep doing this.''
Fast forward two weeks to when Henderson got the chequered flag in the last leg of the three race series at Levels Raceway in Timaru on Saturday and the pain was even further from his mind than in the Christchurch leg.
Instead, Henderson and his team felt the ecstasy of victory after going agonisingly close in the past.
Since the car was finished being built and then entered to race in 2013, he and his crew had been let down by a series of mechanical issues.
``We have always had the speed, just not the reliability. It's been something little that has let us down.''
``Last year the motor blew up for some reason - it was reasonably new - on the Friday in practice in the last round.''
``They year before, it broke a wheel and the year before that it broke a driveshaft on the last lap of the last race.
``So the last 20 minutes yesterday we heard every single noise in the car,'' Henderson quipped.
Although he is filled with the joy of victory, he still has a slight limp as he makes his way around his Midway Motors car yard.
But Henderson, who is the brother of recently retired cyclist Greg, and who keeps fit for the rigors of motor racing with a cycling regime, is keen to get back on his bike this week before planning his next motorsport challenge.
