I have no idea whats wrong.

I am growing the strain Mighty Might, I have 2 mother plants wich are about 4 feet tall, a month ago i made about 30 clones 20 took root and are growing, last night I trans planted a few to the woods and left 4 in large pots They were all healthy looking last night , today when i got home from work 5 plants were a dark purple and wilted over , they look like they dont have water but i watered them last night , i never seen this befor on any plant, why would they turn purple and die, is it a fungus of the roots , i dont know the ph of the soil but im useing the same soil i used on the ones i put in the ground wich is a mixture of 10 year ol pig shit and compost, the ones in the ground are fine, I have 3 clones left wich are in pots and i dont want to lose them, should i plant them away from my healthy plants, I have herd of a deasies wich is called cronic wilting or something in that nature, is this it and what can i do to fix it, i would post some pics but i ripped them out and got rid them for fear of them spreading to my "big mamas" they were hardened off so its not shock, please any info would be greatly apreciated, if it happens more, then i will most certinly post some pics. any advice would be great.