Hi Sharon;
He is indeed the Founder of MDS Financial, developer of Market Analyser. How time flies - I bought the Analyser 15 years ago.
As far as I know though, his connection with the Sharemarket College has only been as a supplier: For a while, they sold the Market Analyser and taught their students the basics of T/A, using his program.
Since the merger of MDS, Bourse, Trader Dealer, and D2MX, Leon has taken some time off and is now running Investorsignals as an Investment Advisory service, focusing on the ASX Top 50.
I have been subscribed to his webinars, which are meanwhile published every week on YouTube.
Check
http://www.youtube.com/results?search_query=investor+signals for many hours of "backtesting".