If we don't like parts of the deal as it stands and they altered one of those parts for the better, do we really want to pray that they don't alter it further? Witty quote and all, but it seems out of place here.
Something like "you should explain a joke, it's like dissecting a frog. It's messy and the frog doesn't survive the process" went a quote whose original source or exact wording I can't find now.
For what it's worth I meant it in the sense that euccastro pointed out. Not that this particular change made things worse, but that entering into a deal which one of the parties can arbitrarily change doesn't make for the stablest of work environments.