Yes it is the 10,000 goo; It is the donut bonus, so the 2000 goo is not connected to the main goo count but starts when the Gingerbread house is unlocked. any goo collected between the 10,000 and the gingerbread house being unlocked is not counted.
When 2000 Goo in the Spooktacular Bonus is reached it does not reset until the Bonus Donuts are selected, anything goo between the 2000 and selecting the donut bonus is not counted. Selecting the Donut bonus starts the Bonus goo count again
Hope I got it straight this time