Of course I cannot find all the web sites regarding the disqualification. This is only one I can find readily, but if you type in Rulon Gardner disqualified you can find several. Some are really interesting reading as to his behavior towards other contestants and the reason he was targeted.
Biggest Loser 11 Contestant to Be Disqualified
There's no place like home!
I am going to guess that a cell phone will not get anyone booted. Using diet pills or diuretics would. What other reasons?
Did a google search on Rulon and interestingly, some are saying that he will not be at the finale! I hope that's not true.