No, Sprint phones cannot be unlocked with the MSL neither with a Network Unlock Code, Sprint uses a different system in order to keep customers in their network, so we created our app specifically to unlock such phones, be aware that our app will needs root if your phone is updated over PD2 rom.
In order to unlock it please go here: https://idoneapps.com
We have our unlock app on the main page, select Android Services then please choose this one: "SAMSUNG | Multiple Carriers | SIM Unlock, Read MSL/SPC, Debrand, Enable Hotspot & Tethering App".
Price is $29.98, instructions are here: https://idoneapps.com/instructions.php#unlock_single
Included you will have Hotspot and tethering unlock, MSL read, debrand, Hands Free Activation removal and many other features.
The purchased license will last for all the phone lifetime and you will get all the future updates and goodies.