The only power powerful enough is actually God and we know he is omni-present and so he wont ever be taken out of the way it would be Holy spirit filled believers
This is quite correct, however, we still have the stated fact that the Restrainer will be removed. Since God is indeed omnipresent, He will still be on the scene then, but, that doesn't mean He will be protecting people from evil. If you consider the emerging facts about Jared Loughner,

A sinister shrine reveals a chilling occult dimension in the mind of the deranged gunman accused of shooting a member of Congress and 19 others.

Hidden within a camouflage tent behind Jared Lee Loughner's home sits an alarming altar with a skull sitting atop a pot filled with shriveled oranges.

A row of ceremonial candles and a bag of potting soil lay nearby, photos reveal.

Experts on Sunday said the elements are featured in the ceremonies of a number of occult groups.
(Story continues...)
(quoted from post five in this thread:

AZ shooter an "ardent atheist", fan of Hitler's "Mein Kampf"

We have a clear picture of what happens when the Holy Spirit is totally shut out of someone's life. Loughner had utterly rejected the Lord and His Light, and given himself over to satan. It is a known fact in some circles that occult involvement leads to insanity, Loughner, case in point. So a nutshell definition of the state of mankind after the Restrainer is removed, will be mass insanity... Chilling, OK, absolutely chilling.