Unless you had multiple plants in the peat pots & wanted to separate the seedlings, I don't know why you would take them out of there & remove any coir but, to answer your question:
I would put the seedlings back under lights, toward the ends of the the tubes, 6 inches below them. Start with reduced hours (at least 4 or 5), as a precaution. Keep them just barely moist, no more. If they show no ill-effects, you should be able to quickly (within a couple of days) work your way back up 16 hours & the center of the tubes.
If you have Superthrive (plant vitamins) give your seedlings the recommended dose for transplanting. I have not used the product in >15 years but 10 drops to 1 gallon of water seems vaguely familiar. If you don't have Superthrive, give the seedlings a weak solution (1/10th strength) of a balanced fertilizer.
As long as it is not too cold, they should be fully recovered & making new roots within a week.
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