Okay, suppose you've violated your probation by doing a whole mess of dope, and your probation officer calls you in for a whiz quiz. You just know for a fact that you burned a hole in the bottom of the cup, but the sample is safe in the P.O.'s locked chain-of-custody fridge, for which you do not have a key.
What would you do? I mean, if you were in that situation, and also a complete moron?
Why, you'd break in and steal the whole locked fridge, of course!
I mean, it's not like that would provide them with a nice, short suspect list or anything; no need to call out CSI: Alachua County for this particular case of appliance theft.
Ten out of ten for boldness and daring, but minus several thousand for proper flowcharting.