For those that saw the post, my apologies. I am not normally vindictive as most of you know. I wish my former employer the best, and hope he dies of a short yet very painful disease.
Dave
It's next to impossible to guess what the owner has/had in mind, but on a wild guess, I'd say he suspects you stole money, or has been unhappy with your work for some time. But he can't prove anything specific. So he made up a bunch of stuff to (look like) he is justified in terminating you. Again I'm guessing, but I suspect this has been in the works for some time. I doubt very much that the notes from the new hire alone did it.
Many laywers will give you a short, simple consultation if you'd like to pursue it. It's bad enough being let go, but to be called a drunk and a stoner is really bad.
Don't sue unless he starts slandering you to other people.
I suspect that you will find better employment at twice the compensation very soon. I'm sure there are many temperary jobs related to the Olympics.
Take a break, gather your thoughts and deceide what you want to do with your life.
You sound like a bright person so don't let them drag you down to their level.
Ian's advice is perfect. Listen to him. Put this behind you and move on.
Your film-tech family is rooting for you.