I "overchilled" my cymbidiums..suggestions?

[zygostates]

Last Fall...I received two very full, overgrown, no named ,cymbidium plants from a friend's estate. I grew them successfully outside on a back porch in half shade/half sun. I know that cymbidiums need to be chilled in order to stimulate bloom...but I may have carried it too far. too long. I let them stay outside for a few days in mid range 30 degree weather..with one night below freezing. It wasnt until after I brought them inside..that I noticed the damage to over half of each pot. I have removed all of the dead debris to find that several of the psuedobulbs are alive and green. I grow predominantly Phals, Paphs,and mini Catts....so my Cym knowledge is lacking. What suggestions does anyone have towards my next approach to get these plants back on track. They are currrently growing in a basement under florescent fixtures. Thank you for your ideas and knowledge.
Glenn