Replays showed the Tickford Racing driver sliding across the infield after Turn 5 before clattering into a number of other cars as he reached the bitumen again at the Turn 6 hairpin.
Thankfully, Courtney eventually exited his battered #5 Ford under his own steam.
Broadcast replays were not completely conclusive as to what the ultimate cause of the crash was, but it appeared Garry Jacobson made contact with Car #5 in a concertina on the exit of Turn 5.
For reference, Courtney had qualified 20th, while Pye started 13th and Randle 14th.
Update 12:47 AEST
The race has restarted after a red flag period of around 15 minutes.