cut the split branch low and even to remove- you don't want a 2 ft long split where a 2" circle will do. They take a heck of a beating with pruning and will LOVE you for it- they always grow back better. You're gonna be shocked at the tens of new buds that force their way through the bark inches below that cut.
As for the one on an angle- if you can stand the way it looks, leave it. When roots are pulled out of the ground its like pulling a thread out of a sweater. Trying to shove it back into the weave- aint neva' eva' gonna go. Waste of your time. You can prop it- but it will keep falling everytime the wind blows putting much more stress on the plant. Let it lie and although it sounds counter intuitive, cut back spaces that are already sparse- that's where the plant focuses new growth- on cuts. Just like your body sends immune cells to repair a skin wound, cutting a rhododenron ENCOURAGES new growth
I would cut back that bush drastically on what is now the top side- (which used to be the side- side) becasue pruning really does wonders for rhododendron.