Who said THC escapes the buds? That's just plain stupid. THC is not fucking gas is it?

Grinding all your bud wont do anything. You'll get lots of crystalls left over though, so you can either collect them and smoke em on they're own and then smoke the weed, or just add the crystalls back in the bag with your groubd weed. Either way, grinding your weed all at once wont make any differnt at all to how good it is.

I dont grind it all when i get it though, i grind up half oz for the day and im set.