From my understanding, Universal was doing all it could to create the quickest turnaround on an attraction, ever. That obviously entails stripping one side of the attraction while it is still open, and just opening THAT until the other is finished. Screamscape has pictures of Delorians outback, which prove that the stripping is occuring (and I was told two months ago about it, so there is no telling just how far they are). Technically, if they could complete the internal re-theme (in at least the split-off rooms and the four rooms on the right side... which is only 15 rooms) and get the attraction itself finished while working on the outside, they could have it finished in two months (who knows... the right screen maybe halfway done already). It would require a lot of work... but is still VERY possible.