"I was riding over slippery rocks," he recalled to Kronen Zeitung. "It's not that I couldn't handle it. But I wanted to support myself with my left leg - and it just gave way because I no longer have a cruciate ligament there."
The 51-year-old broke his arm from that incident and was pictured in a cast by his wife Susie Wolff.
Short term pain, long term gain
In order for the Austrian adrenaline seeker to continue going on his adventures, Wolff has decided to fix his leg.
"After Singapore, I'm heading to the Hochrum Clinic to get a new cruciate ligament," he said. "Then I can do everything again."
However, the surgery will cause him to miss out on a vital F1 race.
"I'm skipping Japan, then there's a free weekend," he said. "In Qatar, I'd like to walk around without crutches. Then I might even be able to go skiing in the winter."
For now, Wolff will be laser-focused on the Singapore Grand Prix on the 17th of September, where the Silver Arrows will be aiming for a better result than at the Italian Grand Prix.