Seeing as the rules tend to indicate that you have to find a new location to hide after you've been seen, I'll assume that if you don't reveal yourself, then the same hide roll can stand. I guess we can think of the roll as how good the hiding spot is (based on your skill at finding the best place to hide, and doing the best job of tucking yourself in there).
In this case the orcs should theoretically know that someone went over there somewhere, but not exactly where, without making a successful search check (which takes an action) to roll perception against your stealth check (dc20 for Tommi, dc14 to spot ORB5). Only the one orc archer seems to be bothering to look. The rest are rather fixed on getting to the manor house.