Well if you're going to put someone in with no experience coaching at all, you've got to expect they'll be a bit ... lacking ... you could say. Why hire someone like that if you're only going to give them a year to learn on the job?
Now I think (like everyone else) hiring someone with no experience is stupid. But given you've decided to go down that path, don't you have to make that decision for the long haul? If we just wanted a filler coach for a year or so, it'd have made more sense to hire some mediocre hack who was a known quantity. Hiring the new guy says we're going to give him time to grow and hopefully turn out to be something good.
Again, I don't think hiring Vinny was a good move, but if we're willing to fire him now, it makes hiring him both a bad and a completely illogical move.