need help asap

[amazin1988]

i was in a rush and i wasnt thinking right and i know better but i was running cm10 and i used odin to revert back to stock everything which i know i wasnt suppose to do but it boots up i see my sprint boot up then comes the samsung boot but it just stays on samsung boot screen i hope i didnt do nothing to mess my phone up :'(

 

[Skunkape60]

While i only tried cm10 for a short time, why should returning to stock with Odin be an issue?