I have never really believed in a lull so to speak.

I think what most hunters experience is just pure coincidence based on several factors.. of which..

1.) foliage dissapearing.. causing deer to get back into bedding deeper into the wood.
2.) pressure by man.. causing the same.. and more nocturnal behavior.
3.) Different sources of food.. ie the acorn crop.. honeylocust.
4.) The beginning of the first female estrous cycle.

And I'm sure there's more. The important thing to realize is most hunters hunt relatively small areas of a deers homerange. This is just a transition period of whitetails.. some incured by man.. some natural.

Adapt to your conditions (if you can) and you'll get back on them.