I think that what happened here is that MeeGo was supposed to be released this year, according to Ari Jaaksi's standards of polishing (that means shiny, and rough around the edges). I'm sure that when the Palm guy came as User Experience guru, deemed it not ready yet for the US market, and needing further polish. And Elop agreed, noticed how he mentioned "unpolished gems" at Nokia? So they are spending this months for further polish. And its easy to see how a decision like it could have motivated Jaaksi's departure.