I wouldn't even think about "taming" it. I mean, what do you get out of the word tame?
Would it mean that you can handle it even when it gets big? I have owned several with a beginning notion of just that. That is just not the case. A casual, non aggressive bite can result in serious injury. I think most keepers experience these when they let their guard down because the monitor is acting so "nice". You figure that he won't do anything to you because he is so calm.
That can change in a heartbeat and can lead to some serious hospital bills.
I feel they are deffinaty more of a observed monitor than one to interact with like anything that is "tame".
Just be carefull and never let your guard down. Even that might not matter thought when the time comes. There would't be much you could do to even prevent a bite.