Mixing science and theology?

There is an interesting debate going on at Telic thoughts between Krauze, an intelligent design evolutionist and agnostic, and Lutheran George Murphy. In response to an article by Krauze on 'When mixing science and theology is OK', Murphy responds:

Actually my theology doesn’t rule out the possibility of science finding evidence of design or a designer. What it rules out is using the concept of God as an element of scientific explanation. When ID does that it is not a “result of science” but an importation of a theological concept into science.

But then, isn't Murphy's statement the importation of a theological statement - theology should not be imported into science - into science.

Read the debate - it's fascinating stuff.