It's good news that Kirwan has gone, however I'm somewhat cautious over having Umaga as the head coach -- on account of his relative inexperience. I'd have preferred someone like Keane as head coach, with Umaga as one of his assistants. But the circus was well and truly smeckledorfed by the Chiefs there, so best just take what we can get.
That quibble aside, the board now needs to first open their hefty cheque book, then let Umaga do whatever the hell he wants with it. If the monkeys keep out of his way and let him recruit whoever he wants, and change whatever he wants, then I'm cautiously optimistic.
However, even the slightest bit of interference from the monkeys will see it all end in tears, along with another sacked coach and a tarnished, formerly-burgeoning, coaching career.
EDIT: Is there any word on where Wayne Smith stands in all this? I'd feel a lot better if the NZRU were to throw their Al Borland our ways for a couple of years.