Here is the said theory lol....
So the strongest kazekage ever...so for comparion's sake let's just assume he was about as strong as the strongest hokage ever...
It was a silent night no different than any other and the 3rd kazekage had just finish an important meeting among the top sand officials....He lays in bed preparing to sleep, but little does he know there is a little puppet equipped with poison in his closet.
It is 4 am in the middle of the night and the closet quietly creeks open and a little puppet doll emerges he climbs onto the bed and injects a needle of poision into the 3rd's butt cheeks. The 3rd is sound asleep snoring and is not aware...tthe puppet crawls back into the closet.
He wakes up the next morning and realizes he is very sick and dies 3 days later....When the 3rd kazekage died in his sleep on the 3rd night the closet creeked open again and the tiny puppet abducted the 3rd's corpse to bring back to Sasori...
and this was the story on how Sasori "sneak attacked" the greatest kazekage ever and turned him into his own puppet.
Is this re-enactment close to what your applying must have happened lol?
Of course I was being a little sarcastic... a Hokage level shinobi losing like this is kinda.... lame.....lol
If this is you think truly happened then I why can't this "gorilla style tactic" have worked on the likes of all previous hokage and any kage/strongest shinobi for that matter....
I mean your asleep.....and if your not immune to poison then that means your dead?
I mean cmon this is a lame excuse for Sasori haters to come up with in regards to how he "defeated" 3rd kazekage...
but seriously im interested in hearing any other "abduction" or "underhanded" tactics Sasori may have used to beat the 3rd...

let the imagination run wild lol....cuz it would be too simple for him to have just defeated him like the manga stated. We must assume it was a sneak attack even though this was never stated.