These are all guesses of course, but...

They might do it if orders already in-hand exceed their ability to fill them before break. We know they stopped taking 08 orders, but do we know how many they have? I wonder. In the past KCAP people have repeatedly said they can only build a certain number of hybrids per day. If Ford has orders to keep the '08 run going after break, maybe they will just continue. It's not like it's unprecedented.

Perhaps production is being altered to match the Fusion. The dates provided are almost identical to those of the FF, and we know the 2010 FFH will share much with the 2009 and on FEH.

Not sure but these are two possible explanations for the unusual changes in production scheduling.