So in an effort to stop the "creep" I'd been experiencing, I took a workout break of sorts last week. Instead of 5 days a week of working out with weekends off, I worked out Monday, Wednesday and Friday, took Tuesday and Thursday totally off. I ate my normal calories, or a bit over since we were also on vacation. Did some activity in walking around, but nothing strenuous.
Got on the scale this morning for the first time since last Thursday, expecting the worst. It said 140.8. I haven't seen 140 since December.
So slacking off a bit didn't kill me. I'm going to probably try it one more week when I'm in a normal situation, and NOT on vacation, and see how it goes, then assess things from there.