he was probably trippin, maybe a panic attack.
the hairs are just an indicator as to whether its good weed or not.
the real reason some weed is better than others has to do with the amount of trichomes the bud has on it, these are the THC glands. also, potency can be lowered by the way it was dried.
curing just gets rid of the chlorophyl taste.
mostly its genetics, thc is a natural sunblock so, naturally, cannabis in high sunlight and/or heat areas it evolved to produce more thc to cope with the stress.