I disagree with your premise. ID doesn't say God did it. ID says, based on science and probabilities, that Intelligence is the best answer for a lot of questions. Thus, it is falsifiable. Just show where a naturalistic mechanism could produce the result that ID says is better explained by intelligent design.
I get the feeling that most of the people I'm responding to have only read their side's criticism of ID, and none of the ID arguments for themselves. This is apparent because the same false assumptions about ID keep coming up.
ID doesn't say God did it.
Okay, just substitute 'Intelligent Designer' and you have...Since the 'assertion' made by the ID 'side' is that the 'Intelligent Designer did it', this is the 'and prove me wrong' part of the argument. And each natural mechanism/explanation response science makes results in the same counter assertion and argument, ad infinitum.