First of all thats Carriers way of making money extra from same bandwidth. Hence the whole bandwidth crunch BS? They sold the service claiming its unlimited then they couldn't define unlimited and stated is subjected to TOS for excessive use without clearly defining it. It wasn't until ComCRAP's fiasco they had to legally come out or face same fines by FCC. Now from what I read in that thread and man that was long thread like 7-8pages or something. The user used torrents, downloaded XXXX lol, did light tether but mostly bandwidth quota was hit by P2P.
P2P FTW always the reason

you should have seen my FServ spec and stats my ISP wasn't very happy me hosting my own server and pulling 3.5TB TX bandwidth.
TMoUS has 5GB soft limit far as I know but what I am saying is as I had asked those folks if they were contacted by the Abuse team they told me no as they were never notified or given warning. Normally when you get passed there quota which I myself believe 19GB is high on mobile device. I don't think TMo simply enforced it, now if everyone keep doing this they will. I myself have never personally went over 2.5GB/month usually is at 250-500mb/month.