I am pleased to report that the hot water/cold water method works.
Boiled some water in my glass electric kettle. Let it sit for a while - half an hour? - until it was still hot but I could comfortably put my fingers in it. Poured some into a small bowl, plunged the branch in, let it soak for a bit, manipulated it into shape, then doused the reformed branch with cold water. It "froze" into the new shape.
Soon I will do the rest of the branches and maybe do a Teutoberg dio.
Thank you everyone for your advice! Playmofriends is righteous.
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