Rolling Over...and over...and over.

I'm really excited that Sebastian has learned to roll over (finally!). However, he can only roll from back to front. All night he is practicing his new skill, which means I get up non stop to roll him back over since he screams when he can't get back to his back. Did this happen to any of you? What do I do? Wait and hope he learns to roll the other way soon? Let him sit there screaming? We do "cry it out" for sleep, but it seems mean to leave him there like a beached whale.