Well given that (assuming he's a catholic) he's claimed on this thread to know Catholicism better than Pope John Paul II (Who claimed that the Vatican had no objection to the entirety of the theory of evolution including the descent of man) why not push it a little further and claim he understands what God would and wouldn't do.
I make a conjection based on the teachings of the Churrch and God's past behaviour. You don't see him stepping in lately creating pillars of fire or mana from heavens, do you?
You also seem to forget that evolution is a THEROY that explains a humans biological descent. Wether intelligence is the product of evolution is not proven.....
So God doesn't like to interfere with the laws of the universe yet you claim that the proof you have that he exists is the fact that he interfered with the laws of the universe to give humans intelligence? Even though there is an explaination that gives humans intelligence without God needing to interfere? 
Evidence? Who ever said anything about evidence? I said it's strange.. and it is.
You already have thrown science out of the window by ascribing a supernatural explanation to something which science can already explain. All that remains to be seen is how committed you are to doing that! 
So according to you, if I do something once, I should do it all the time, under all circumstances? Such primitive generalizations are below you...
Now plase, leave this be allready.
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ON TOPIC:
It is possible Terrans and Vasudans had the smae descendants, or even that Vasudan genetic material came from Earth 8on a metoer or something9.
IT's not liek things like that aren't uncommon in Sci-fi.