The only problem is that you CANNOT understand these words without taking into account the " Then, "
For example -
Then, as the clock struck midnight, he threw the switch and electricity coursed through her body.
What does this mean ?
It is some diabolical killer ?
... a legal execution of a diabolical killer ?
.... or perhaps some strange way of describing a late-night emergency room defibrillation procedure ?
Back to the topic at hand -
How can he possibly deem others interpretation of the verse as not being extreme WITHOUT himself having a full understanding of what it says ?
This may help you:
Quran 9:4
You cannot escape Allah, weaken or frustrate Him. And proclaim a grievous penalty of a painful doom to those who reject [Islamic] Faith.
PRECEDES
Quran, 9:5
Then, when the sacred months have passed, slay the idolaters wherever ye find them, and take them (captive), and besiege them, and prepare for them each ambush. But if they repent and establish worship and pay the jizya (poor-due), then leave their way free. Lo! Allah is Forgiving, Merciful.