Don't pitch it if you don't really want to! I've grown this plant from leaves and stem like this. The stem will have to be shortened, by quite a bit. If you have 2 or 3 pieces of bamboo, or dowels, that will help. Just get your new pot ready for those arial roots. Leave room for those guys, and try not to bend enough to break. You do want too much stem on that plant. The stem on mine always wash broken down down at next potting. I was just careful to leave little to rot. Remove damaged leaf close to the base of the plant. If I were my plant, I would remove a couple of the bottom leaves, to allow more root into mix, give roots a little less to support. Pot that plant. Mine were never too fussy. I just kept mix clear of leaves, and brushed excess mix off of the with a small paint brush. Tie it to the bamboo or dowels shoved in your to stabilize.

I'm not a professional, or a Xanadu hobbyist. I just saw your question, and that it was yesterday. I had a good time with these, and loved to use the leaves in body flowers, and some floral arrangements. I hope I was helpful and did not say too much of too little. Please let me know what you've decided to do with this plant. If you discover that I have said something that could be done better, let me know that, too.

I would stick the whole stem in soil, as horizontally as possible.

I'd cut or break the trunk off about 4" below the crown. If you saw it or use loppers, be prepared to pare back the cut end of the propagule (cutting) with a very sharp tool to rid it of all tissue crushed/damaged by a tool. Ideally, and when the propagule is ready to stick (plant), all surfaces of the cut end should have been revealed by a razor sharp tool - utility knife with a fresh blade would be great - I use a grafting knife or a hardened industrial hacksaw blade fashioned into a knife and sharpened scalpel sharp. Rot starts in the crushed tissues and the small tag ends of tissue that come to being from improper preparation of the propagule. Stick the propagule in a well-aerated medium that drains quickly/thoroughly. The medium should be about as damp as a wet sponge you just wrung out, and the propagule should be stuck to a depth that leaves the entire growing tip exposed. IOW - be careful not to plant too deep.

Most off-the-shelf container media support a perched water table (PWT) of considerable ht. A PWT is water that remains in the medium and "defies" the force of gravity. It is VERY limiting to root health and root development, so it's worth thinking about.

The shaded area at the bottom of the pots above represents a PWT of low ht. Most off the shelf media support 3-6 or more " of perched water, so it's very important the medium is highly aerated (so it drains adequately) or the pot deep enough that when you stick the propagule the end is not submerged in the water occupying the PWT. Your propagule needs lots of air in the medium surrounding the bottom of the propagule if you're to have a better than average chance at success. I would not start the propagule in water, BTW.

You can also stick the cut-off in a pot and it should strike and back-bud along the stem. Same treatment described above recommended.

Al