Surely it would have been simpler to resolve the strike issue?
Perhaps, or perhaps no compromise is possible. I am not privy to the details. But then what about the next strike issue...?
It's all strategy and posturing. This wet-lease sets a precedent; the airline will spend money in order to bypass the strike. That dilutes the potential effect of future strikes and hence reduces union potency.
Not saying I agree with it or not but from a corporate position it's sensible.