I definitelys ee what you mean...sending them to the home page is not the best option. I'll work on that.
Also, I noticed the error message on your form:
Image upload failed. Your image may have been too large or there may have been another problem. Please reload the page and try again
Could you turn off Contact Form 7 plugin and see if it still does that? I'd like to figure out what's conflicting with PhotoSmash since I've seen that several times. Something is causing the form to fire when it shouldn't :-(
Byron