Those of you who were getting comfortable with the breadth of Sprint (NYSE: S)’s Simply Everything plan and partaking in the odd smartphone tethering will be in for a rude interruption. Some heated discussion on the Sprint forums has revealed that phone as modem service is no longer available for Simply Everything customers, although a Sprint employee vehemently defends the decision, saying that PAM has always been an add-on, and anyone tethering up until now was doing so outside the purview of their contract. Sprint VP David Owens has confirmed the change and that there won’t be a PAM add-on available for Simply Everything any time soon. There are always workarounds, like My Tether for the Pre, and TetherBerry for BlackBerry (NSDQ: RIMM), but that’s more work than a lot of users would like to put in; clearly Sprint is more interested in hawking their mobile broadband access through WiMAX routers. It’s disappointing news for many customers, but it’s hard to blame Sprint for pushing 4G.