That's what I was thinking... Get rid of the ones that have the most stretch. I also noticed, the other day when the plants fell over because of the heat, that one plant has a really good kink in the main stem and not sure how it is still live? I will probably get rid of that one too and the one that has the nute issue/burning leaves. Some of my plants are super good with nodes that are really close.
And yeah, can you post a pic of LST plants? I don't know what this is, exactly.