I hate to sound obnoxious, but it's very simple. You've gained weight because you are exercising less and eating more. If you want to maintain at 205-210, you can't train less (you said work takes up more of your training time) and be less strict with your diet ("I tend to snack on bread, pasta sushi, cheese, nuts or jerky").
The body always wants to get back to a previous higher weight and amount of body fat. If you want to consistently maintain a leaner body, you have to be consistent with your diet. You can't just eat super-low calories for a few months, then relax and start snacking. You can't snack on fattening, calorie-dense foods. And if you have less time to train or less time to just be active/on your feet, you have to adjust your calories down accordingly.
Before you even entertain the thought that "other factors" like hormones are to blame rather than diet, you should prove to yourself (and to us) that your calorie intake is as low as you think. I guarantee you, if you weigh and measure EVERY SINGLE THING that goes into your mouth and log it on fitday, you'll see there are no other factors. It's the food, period.
Also, keep in mind that even if a person has supposedly messed up his hormones, energy balance still rules. No matter what your hormones look like, if you eat fewer calories than you burn, you WILL LOSE weight.