GTA San Andreas glitch

Interesting glitch found in GTA San Andreas whilst I was out yesterday. CJ was doing the down hill bike race in The Badlands when a plane inexplicably crashed into him, this caused him to fall *through* the mountain and plummet through the netherworld of GTA:SA so then James (who was playing the game) opened the parachute. CJ suddenly appeared back on the course complete with bike and permanently open chute until the end of the race. Heres some questionable quality movies taken with my phone - movie 1 and movie 2.