If you really do have enough knowledge and understanding of the physical laws, to create a model that will give you an answer. That answer must be what you observe.
Newton's law is a particular case of general reletivity by the correspondance principle. As long as the conditions are such that Newton's law applies, the answers arrived at from calculations are fine. Once you don't have those conditions the answers suck. In this case the model(the math) is wrong.
Now if you make calculations in GR and the answer disagrees with reality, either your understanding of nature is wrong(bad model), or their's some unseen force acting. In order to claim an intelligent unseen force is there, you must abandon immediately any idea that your understanding of the physics is wrong(bad model). You must claim perfection. In that way you can introduce your intel guy, but once done, you must also acknowledge that the laws of physics are insufficient to govern the world. The intel guy is not a law of physics.
Doesn't follow.
My knowing that a greater intelligence exists doesn't change either my ability or the laws of physics.
Lets go back...
"Now if you make calculations in GR and the answer disagrees with reality, either your understanding of nature is wrong(bad model), or there's some unseen force acting(physics, or intel)."
Here's the possibilities:
The model is wrong-math
The model is wrong-knowledge and understanding(physics)
The model is right and there's an intelligent force
Do you agree?