In 1991, he joined the Jordan Grand Prix racing team, helping them to fifth in the constructor championship. However, his season was cut short by a two-month prison stint, received for spraying CS gas on a London taxicab driver after a traffic altercation (his race seat was filled temporarily by then-unknown Michael Schumacher, making his Formula One debut). When he was finally released from prison after two months, he had missed four Grands Prix (including his home Grand Prix in Belgium). The Jordan Grand Prix racing team was not interested in returning his seat (which was given to Alessandro Zanardi) for the last two races of the season, in Japan and Australia. Finally, he was able to compete in the last Grand Prix of that season with Larrousse, replacing Éric Bernard, but he failed to qualify.