Hot Tub Time Wasting Machine

I am a John Cusack fan. I always have been and I suppose I always will be to some degree. Recently he has been making it very difficult for me to see his movies, as he has been doing some crapola films. This new film, "Hot Tub Time Machine", is no exception to the crapola genre of movie making. It's horrible.
The basic premise is that 3 old high school friends and one nephew head to a weekend getaway at the same place that they used haunt back in high school. They are frustrated with their own lives and are at the same time trying to live in the past. They find a hot tub time machine...yes, they do...I usually do also when I head to Bowen Island or up to Whistler when I am trying to relive my glory high school days. Sigh, really people keep up here. So they find the time machine and it takes them back to the exact same place but in 1986, when they were supposed to be cool and had their whole pathetic lives ahead of them. Yup, that's the story. They end up spending the rest of the movie, trying to get back to 2010 while trying not to disrupt the natural turn of events that occurred originally. Did you get this incredibly complex story line? It's so "Back to the Future" with several major exceptions...."Back to the Future" was funny, well written, innovative, creative and included many talented actors...acting well.
Yeah. This movie was one that I really didn't need to see on the big screen. Well, to be completely honest, I really didn't need to see it at all. I would have happily spent my days rewatching all those glory Cusack moments in "Say Anything" or "The Sure Thing" or even his little role in "Sixteen Candles". John, John! Where did you go wrong?
Are there no more creative ideas floating around Hollywood that James Cameron can't put onto 3D? I don't understand why anyone would have made this film. It was ridiculously stupid, poorly written and just plain silly. It should have been called the "Sad Hot Tub Time Machine" as I am certain that everyone involved was so sad that they had to associate themselves with this crapola film. Where was the acting? Well, I think there was anything for the actors to work with and quite frankly there wasn't a whole lot of acting going on.
My son told me that this movie is being compared to "The Hangover" from last year. Let me make myself perfectly clear (in case the last several paragraphs were too vague), this movie is nothing like it. "The Hangover" was hilarious, over the top, provacative, funny, strange and pushed the boundaries of decent film making with good lines and many surprises.
"Hot Tub Time Machine" owes me 90 minutes, a diet coke and $11.99 Canadian. Where should I send my receipts? Mr. Cusack?