Neiberger, To view your backed up text messages you will have to restore them back to your phone. There is no way of viewing them on iTunes. If you do a restore back on your phone and they are not there then there is no way of being able to retreive them since Sprint does not keep record of that info. Hope this helps!
Is there a way to retieve text messages that were deleated? I have generally sync"d and or backed up my oPhone 4s every few days. However, the messages I need date back to roughly 2 weeks ago. Is there a solution out there?