Since AW is the Design Authority for the mil Sea Kings and the current service provider of the engineering for mil SKs under SKIOS 2 - they would have a vested interest in a Sea King/Carson upgrade, even though they would probably prefer to fit their own BERP technology blades.
The alternative, given that their SARH bid has been withdrawn and SKIOS would end in 2017 (the OSD for SKs), would be to completely lose any foothold in the future of SAR unless the 139 is chosen for the contract. Seems to me they would be foolish not to at least offer this solution which could act as a stop-gap measure until the clowns in power recover the economy from meltdown.