Well I think deflasking would be messier, Tim. I chickened out on that step. When the grower offered to compot for me, I thought, "Heck yeah!"
Don't wait too long to uncompot. I thought longer would be better for the plants. They'd be a big bigger and stronger, etc. But the roots sure get tangled. And they didn't grow down nearly as much as they grew sideways, more tightly woven with one another. I was a bit alarmed to find the start of mushy softness. I know I didn't overwater, so I can only guess that the tight mat of roots didn't allow sufficient air to get to the roots, and they were starting to think about rotting.
I also suspect some of the runts were competing for resources and should do much better potted out individually. Just some random thoughts.