Please see these two images: https://imgur.com/a/5Y2zKnJ

I have two cherry tomato plants (1000 delicious and sun gold). each of them were bought and planted as seedlings and now have this weird elbow/joint in them. In addition, where the main stem comes out of the elbow joint now I have to prop up with ties or it sags a bit. Not completely, but a bit.

Everything else in the plant seems to be doing well and overall it's getting bigger, but i don't like the sagging main stem. The plant is in good midwest soil, gets 3-4 hours of direct and the 5+ hours of filtered sunlight, gets 1-2 inches of water per week and is mulched to retain moisture.

Anybody seen this before? If so, will it be okay and continue to grow? Any advice is welcome.