I was in the Droid Bionic forum and came across this ( thanks jesziicuh) . It totally works I did it on my wife's line. If you have tired data, call *611, option 4, say add a feature, talk to a representative and add unlimited 4g hot spot to your tiered data line. They upgrade your data to unlimited to accommodate the unlimited hotspot. Then log into you verizonwireless account. Go to the row where it says plan. Then click on change features. Pick your phone you just upgraded, then scroll down and remove unlimited 4g hotspot. Worked like a charm!!! My wife's data tracker on her phone now says unlimited!!!! Got to love loop holes!
Edit: This might actually take several attempts to accomplish. I have heard some people have tried upwards of 5 times before actually receiving unlimited data.
Edit2: Thanks to nomisunrider
we have the actual plan code the verizon rep uses to add 4g unlimited MHS. plan code #76153
— $30 Unlimited 4G Mobile Hotspot. I would still ask for the 4g unlimited MHS first and if they give you trouble tell them you were told the plan code is 76153. Hope this helps and cuts down on the amount of calls some people have to make.