You will need your MSL, good luck obtaining that! The only way I was able to obtain it on Jellybean was by messaging VM on their Facebook page and claiming I had an error code 67 and needed my MSL to fix it.
Once you have your MSL, you can follow this guide:
http://androidforums.com/sprint/744016-guide-how-bypass-sprint-proxies.html
After bypassing the proxies myself, I haven't noticed a significant difference in data speeds, and I've never been throttled because I never get close to even 1GB of data per month so I can't confirm it actually works, but you're welcome to try it.