That is the way the Taborca comes, with D-subs blind-mating on the wing root to connectors in the pod. It is all moulded in. Yep, there isn't a lot of connector engagement which is why I am worried about the wing attachment
The wing does have two of these retainers I think:
The set-up is basically the same as in the photo on that page except with two of the retainers per wing, so it looks to be fairly common on large sailplanes.
The pod I am using now had been through a crash with the previous owner, so maybe the retainers don't work as well as they once did.