The link below was Tweeted by Dave Marcoux (the former Calgary Flames goalie coach has a Twitter presence),
Stating that, "although for basketball, they are great for goalies too"
http://www.stack.com/2012/09/29/basketb ... -mobility/
The Sumo to Toe Touch, and reverse is a combination I have not thought of.
And here is part one of the series
http://www.stack.com/2012/09/27/basketb ... -mobility/