Jules Bianchi says his elbow "got stuck between the chassis and the seat" causing his crash in first practice in Japan.
The Marussia rookie went off at the second Degner after putting in just eight laps on Friday morning.
In the immediate aftermath Bianchi was seen looking at his elbow which later rested on a bag of ice.
And in fact the Frenchman says it wasn't a mistake so much as his elbow getting caught that resulted in his crash.
"My elbow got stuck between the chassis and the seat so when I had the oversteer moment, I could not turn right any more," he explained.
"I am okay now, I had some pain in the elbow, but now I'm fine."
Such was the damage to Bianchi's car, that the rookie was forced to sit out FP2 as his team were not able to repair it in time.
"It's a shame, but these things happen in racing," he told the BBC.