The idea that Santorum will do really well through April 24 looks to me like wishful thinking. The primaries through April 24 are Wisconsin, Maryland, DC, New York, Pennsylvania, Connecticut, Rhode Island, and Delaware. Romney figures to win every one except for Pennsylvania.
I was trying to give hope to Santorum supporters. You may be right and if you are, that will make mathematically impossible for Santorum to get 1144.
Sorry, I left out Louisiana, which Santorum also figures to win.