Scottish officials will be attempting this week to have his yellow card quashed, but that was also of little concern to Jon after such a dramatic finale.
Jon feels his departure for an offside offence, when Scotland led 9-6, was the turning point and that his absence allowed France to command the final moments, which brought a match-winning try for centre Damien Traille.
"I can't help but feel that had I stayed on the pitch things would have been different," he said. "International rugby has its highs and lows and I'm feeling one of those extreme lows at the moment.
"People might say that I did not do anything, but the fact remains that I got yellow-carded with 10 minutes to go when we were in the lead and we ended up losing the match," said Jon, who appears to have been the victim of mistaken identity.