[tevake]

I'm not sure how much movement you could get that low in the trunk. But you could remove the lower branches, then strap a stiff steel piece ( like those t sectioned fence posts) flush with the lower section extending a few feet above the bend. Then gradually pulling the upper section toward the post. Then you could double the effect with some cables staked to the ground, gradually pulling the top in the direction you want. Kind of like a large bonsai.

I'm certainly no expert, but pretty sure you could get some movement in the direction you want.

Cheers Richard