Yeah, they could easily be of that mind. In fact, it's the only sort of plan which fits the evidence - but it has to be said that the latter is almost non-existent. I have no idea what they're actually thinking. It's been very hard to see any kind of clear direction on the board's part ever since Fergie retired.
However, even if the above is the plan, they could be forced to abandon it if LVG simply can't motivate the players any longer. Waiting for that "mathematically impossible" trigger, as they did with Moyes, may not be on in LVG's case. This season is very much salvageable: With a new man in charge we could end up doing fairly well. Problem is (many would say) that they may not look beyond Giggs for the "new man" part.