The world spinning

Whenever someone tries to make spino stand on two legs it usually end up with them shortening the body and neck or forcing it to stand in a way that makes it look like it's about to fall over. I think it's more likely that as the animal's legs evolved a smaller size and torso elongated it's arms became used more often to brace itself and eventually walk. 
Yes I know we don't have the wrists, or much of the arm yet, but I doubt smaller arms will shift the balance back much. (also I have swapped out the arms for smaller ones and it still works as a quadruped )

I trust Marco Auditore's skeletal since he was on site and was working with Ibrahim. 
Getawaytrike's is very oddly proportioned, and still looks like it's center of gravity is too far forward to balance.
Hartman's spinosaurus has too much character.
Not to disrespect them, just I trust Ibrahim and Auditore more on this until there's a strong enough argument to convince me bipedalism is more parsimonious.

(full res is behind download)
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Spinosaurus modified from Marco Auditore's skeletal to have sigil neck.
links
www.researchgate.net/publicati…
www.nationalgeographic.com/sci…
markwitton-com.blogspot.com/20…