James Mortimer 04.Apr.2013Getty Images
Taylor faces a mad rush across the Indian Ocean to be ready in time, with Ben Funnell moving from the bench to take Flynn's starting position.
The latest news isn't ideal for the Crusaders, already without Richie McCaw, Kieran Read, Dan Carter and Johnny McNicholl.
The good news however is that All Blacks tighthead Owen Franks has overcome his rib cartilage injury earlier than expected and has been named in the starting side, ensuring the Funnell will have two All Blacks props either side of him for the cauldron that is Durban.
Crockett will start in his specialist loosehead position after he was forced to switch sides against the Stormers to cover for the early departure of Franks, and the franchise would have been celebrating the news this week that the Crusaders stalwart resigned with the seven-time champions.
AMENDED CRUSADERS MATCHDAY SQUAD:
Tom Marshall, Adam Whitelock, Robbie Fruean, Ryan Crotty, Zac Guildford, Tyler Bleyendaal, Andy Ellis, Luke Whitelock, Matt Todd, George Whitelock (c), Sam Whitelock, Luke Romano, Owen Franks, Ben Funnell, Wyatt Crockett.
Reserves: Codie Taylor, Joe Moody, Dominic Bird, Jordan Taufua, Willi Heinz, Telusa Veainu, Israel Dagg