Your tree is being 'wind trained.' No matter what you do to fix it, the tree will lean because the wind is pushing it in that direction. That's the reason the majority of branches are growing on the down wind side of the tree. We don't have Santa Anas but we are in a river valley. Trees are always planted at a pretty good slant so they lean into the wind then the wind straightens them.
My suggestion was too pull the tree so it leans into the wind. Another solution would be to turn the pot the tree is in. If its to heavy to turn, can you put the pot on a pot trolley so you can periodically turn it?
Another problem I see is your tree stake is keeping the trunk of the tree from moving. Unless the trunk has the ability to move, it won't grow strong. The stake has become part of the support system of the tree. Without the stake, the trunk will collapse. Time to change how the tree is staked to allow movement.
Take advantage of the wind to fix the lean.
