I don't know if tipping is recommended for soursop but i did anyways.
I got a small angle between the two branches and the both basically remained vertical. (same thing happened with my Malay apple)
I tried training one to go more horizontal and the truck just split, I applied very little force, I was pretty shocked how easy it was to split.
The tree is still alive though, I'm just going to let it do its own thing now.