You are probably just saturated. In my opinion, you might have reached the point where you need to be (right now) with theory. If you are not getting much practice time, you could pace the inflow of new information to give yourself time to absorb and apply it.

You really don't need to change direction; I don't even know what that means... Are you learning theory without songs to use it in? Don't get too caught up in the goals and just play.

I like the Steve Vai reference. Go with what is inspiring you. If that is learning theory, go for it. If you want to play, theory really has a second seat. One does not need to know how to build a car to drive one, or be a refrigeration tech to use an air conditioner, or be a programmer to use a computer....Right?

Do what's important to you and forget everyone else. Life is short, spend it wisely. :)