I think You're wrong about this. The Lakers didn't need to rush to hire D'Antoni. They needed to meet with Phil, bargain for a few days and strike a deal. They jumped to sign Pringles a lot sooner then they needed to. Maybe Phil asked for the moon at first as an opening gambit, but what's clear and irrefutable is that Phil is now saying he didn't need all that and the Lakers never allowed the negotiation to continue.
We're 2-0 under Bernie and D'Antoni can't coach for a week anyway, they could have done their homework and made a decision Wednesday. if they couldn't convince Phil to back off some demands then fine, they tried, they obviously could have though and thus they made a mistake.
Also, Phil wanting final decisions over personnel matters doesn't hurt Mitch, it helps him. I'm pretty damn sure that Phil/Mitch agree on personnel matters a hell of a lot more than Mitch/Jim do and it would take Jim out of the equation, which would be good for everyone. I trust Phil's and Mitch's basketball mind over Jim's - heck I trust Jeannie's over Jim's. This was a bad move by the Ownership and if they don't chip the fans will be pissed!