Gavin Rich's argument is twofold: Mbonambi's move back to the Stormers is an immediate fix for a hooker crisis in Cape Town, and — more importantly for Bok fans — it reopens the question of who backs up Malcolm Marx at next year's World Cup. The Sharks' decision to cut ties, driven by a disciplinary infraction and longer-standing culture concerns, had effectively put Mbonambi in a blind spot for Erasmus, who couldn't assess him while the dispute was unresolved. Now, playing regular franchise rugby again, he becomes a viable option. Rich notes Mbonambi had reportedly trimmed down and worked hard on conditioning before the Sharks incident derailed things, so the physical decline isn't necessarily permanent. The Fourie safety net is ageing out, Wessels and Mneblele are pegged for the 2028 cycle, and Marx's World Cup final injury in France exposed exactly how thin the cover is. A rejuvenated Mbonambi — Etzebeth once called him the best scrumming hooker in the world — slotting into an already potent Stormers scrum would give Erasmus a real read on whether he remains a 2027 option. Rich also flags the subplot: the Sharks, freed of Mbonambi's contract, are now expected to chase Marx, with the Bulls seen as the more likely destination.