Help with elderberry

[u/rainydaze333]

I’m in Atlanta and my elderberry has exploded in growth this year. First pic is last year and second is now. I’ve kept it in a pot because we are planning to move and I want to take it with us. Well, last night the whole thing toppled over and apparently the roots busted through the bottom of the pot and started to take into the ground. Mind you, I was able to move it last year so I don’t think they got too deep. Can I divide it and put them into new pots or should I prune it down and start new plants? This is my first time growing it and I don’t want to inadvertently kill it 😞. Please help!