Sorry Rope, thats how locals secure monitors, they tie them like that and tie them to a tree. I hear thats common in indo too.
Also, bloated makes the monitor round, not wide. Even bloating does not account for the tail and neck thickness. This could be a gravid female, which would better explain the fat middle, but even so, its a very fat monitor.
About living around humans(sewers) people who live where monitors live, understand clearly, that monitors do very well living off of humans, they are very common in cities, edge of cities, garbage dumps, farms and paddocks, etc.
I one time I was concerned about human encroachment on monitors, then I found out, they do better with that. So now, I will worry about other types of reptiles and animals. As you know, I call monitors, reptilian rats. Not in a derogatory term, but in a survival sense. Cheers FR