I saw this a long time ago on e2s, i bet that card snapped off and gt sucked into his engine on the next ride, have you ever bent a credit card back and forth just a little bit, it snaps quick
I had to order one side of reeds on my blaster one day and put them in and was riding and my plug was fouling out and back fired and blew my old ones into pieces. So I took a sheet of tin and traced my new reeds and cut it out, poked the holes in the tin with a hole punch, bolted it up, took right off and rode it until my bottom end came out lol.