Originally posted by Endless Mike
Except Sandman isn't even made out of sand.... just a similar substance. And he has never shown the ability to control sand that is sentient and has a mind of its own. Not to mention that there would be no way to hurt him, Sandman can just reform, while Gaara is vulnerable flesh and blood that can tire and be killed.
It is similar enough to sand that it won't make a difference (which is why he can absorb sand into his body bulk up and replace lost parts). Gaara can control sand once he mixes his chakra with it. He can take control of Flints body and cause him to disperse and simply prevent him from reforming... he could even mix Flint with blood soaked sand in his gourd and it would all be over.