I think Santorum suspending his campaign is way more than Bella's health. If he thought he had a Chinamen’s chance of winning the GOP candidacy he would've stayed in. He's polling here in PA and mathematically just couldn't pull it off.
You're right. But his timing comes across as a classy exit and preserves his options for 2016.
All things considered, he made the right move. The republic is better served by reluctantly accepting an outside chance to elect a trainable RINO than in conceding defeat to a hard core Marxist.