How to Prune and Propagate a Euphorbia Trigona

Hi!
There is a narrowing and bend in the main stalk of my Euphorbia trigona. Is there anything I can do to fix this? My research tells me that cutting it here for propagationLearn how to propagate plants by plant division at https://www.houseplant411.com/glossary would cause it to scar and no longer grow from this point. However if it is going to continue to grow wide, I feel like it will always bend like this.
The first picture is unsupported and shows how the stalk flops; the second picture shows the thin spot.
Thanks in advance!

Hi Hillary,

I have had success cutting the top off of a Euphorbia trigona directly below the bend in the stalk. Branching should occur directly below the cut. The cut may weep for a will until a callous forms. You can use the portion you removed to start a new plant.  Cut a few inches off the bottom of the cutting and then allow the cutting  to form a callus for a few days. Plant the cutting about 3″ deep in a pot of perlite. You may have to place some small rocks around the cutting to prevent it from falling over until roots develop. Perlite is a good choice because it prevents you from over watering. Place the pot in a warm spot that gets bright, indirect light and be patient.  The white, milky sap that seeps out of any cut on the plant is a severe irritant and is poisonous.