When you say THC is best when fresh, does that imply smoking it before it has been cured, cause unless you do an extract of some kind, you are not going to smoke "fresh" weed at all, unless you want to remove your lungs from the current position and plaster them on the ceiling.
The process slows down rapidly, but it does not stop the moment the plant is cut. There is still enough of the processes going on that it will indeed finish out the trichs that were already in transition, I have seen it myself several times on my own plants. Will it cloud up a fresh trich, no, but it will finish one that was already started. I also have bud that was stored for over a year and the trichs were pretty much as I left them, they did not amber up at all.
Hell, our fingernails and hair grow for awhile even after being filled with embalming fluid and stuck in a dark cold hole 6' down.
Peace and Great Grows
Asmallvoice