So, according to this logic we wrestle against rogue fallen powers and principalities uncoordinated and without any hierarchy of authority? Or are you saying satan is coordinating his attack from confinement? Not much of a confinement then is it...?
Bowman and the other Amil's also don't take the following scripture into consideration, or they circumvent or distort it:
"We know that we are children of God, and that the whole world is under the control of the evil one."
We know that there is going to be a literal binding of Satan, for a literal thousand years, in the literal place of the Abyss. And it will be during that same thousand years in which Christ will reign on this present earth in Jerusalem from the throne of David in fulfillment of the prophecy. This will all take place when the Lord returns to the earth to end the age after the wrath of God has been completed. Bowman and other Amil's must spiritualize the scriptures in order to present their false teachings.
As you an I know, Satan is out an about and his malice will become even worse during that last seven years, especially when he and his angels are finally thrown out of heaven and restricted to the earth. If you haven't already, I would suggest looking up what Amillennialist's believe in order to understand Bowman's false teachings.