While researching how to save my leggy tomatoes, I've learned that they can have the extra stem buried during a transplant to "reset" the height, and this buried stem will then grow roots of its own. Assuming you could provide adequate light after transplanting (i.e. they were intentionally given less light than was available to induce legginess), could this opportunity for rapid root creation actually be a good thing?
I could imagine the induced stress which resulted in accelerated growth could be utilized to create a seedling with a stronger and healthier root system, benefitting the plant once it bounces back from transplanting. Or would the poor lighting and transplant stress outweigh the benefit that more roots could bring?