^^^^ is that the beginning of the day or the end of the day?
If the "area" is marked on a trail map as "back bowl #7" or "Steep and deep Glades", then maybe it can meet my definition off-piste. In the interests of clarity, I'm defining off-piste as skied seldom enough that the snow doesn't get packed down by skiers, moguls definitely do not form, and as far as your ski can tell it might as well be fresh never skied snow with the possible exception of a few tracks through it.
The area is Good Medicine. It is NEVER groomed. It is treed. The link takes you to pics the whole length taken on different days, different years, etc. Cannot see how time of day would tell you a thing. The snow tomorrow morning will look the same as this afternoon unless it has snowed or blown. It could be choppy in the morning, get dumped on all day long, be filled in by the pm. Or vice versa.
To me, it is clearly off piste. Yet it is definitely marked on a trail map and definitely skied. The only grooming it gets is done by Ullr. Probably 2000 of the 3000 acres here is this stuff.
Conversely, there is one area where the groomers do play dodge'em through the trees every night, and that is down in Glory Hole. You can choose to follow a groomed part or duck to the other side of a tree to ungroomed and back again. Frankly, the grooming there is so helter skelter and variable I'd still call it off piste.