It seems fairly common that a WAS is hoping for the most amicable split. In many cases, it appears that what ever reasons the WAS decides are worth D over, they still will feel guilt...
So as they plan their exit strategy (in a way that benefits them, based on the level of offence they feel has been their plight), they are working out how to "play" the bomb drop, so there is the least amount of emotional damage for all involved.
That would be what I meant by the WAS planning for a "joyous" surprise... notice the word joyous in quotes, as they are certainly aware that there will be nothing joyous about it...
