Like Louie Roberts use to say when I was Kid in St. Louis, if you want action on the cue ball snap the wrist. I think the technique you are describing is very effective, thanks very much for taking the time to post it. I am certain that many will benefit from this thread if they take the time try what you have described.
Merry Christmas.
Here's a YouTube video compilation of old news clips highlighting Roberts. Interesting, his stroke looks very similar to CJ's stroke IMO. Must be a Missouri thang.
http://www.youtube.com/watch?v=5G13l_W_UI4&feature=youtube_gdata_player