SISKO: That thing they put around your neck
ERIS: It suppresses my telekinetic abilities. Without it, I might be able to break through the security barrier.
SISKO: Then we'll just have to find a way to get this collar off.
ERIS: Even if we do get past the barrier, no one ever escapes from the Jem'Hadar.
SISKO: Luckily for us, they seem as sure about that as you do. Look around you. They've placed the three of us in the same containment field. I've never seen more than four guards on duty at any one time. As far as I can tell, there's only this single containment field between us and freedom. They're overconfident, and that's what's going to help us get out of here. Maybe if I can pry off that casing, I can get at the locking mechanism. (her brooch) May I?
ERIS: Of course.
…
ERIS: I can't believe I'm on the other side of the galaxy.
(Sisko comes out of his office, armed.)
SISKO: You'll get used to it. Move away from her.
ERIS: I don't understand.
QUARK: I've been looking over this collar of yours. I thought if I replicated it, I might be able to turn a tidy profit. Imagine my surprise when I discovered there's nothing in here. It's just a complicated locking device.
SISKO: Which means you could have used your telekinetic abilities at any time. So the question is, why didn't you?
ERIS: You seem to already know the answer.
SISKO: The Jem'Hadar wanted us to escape, didn't they? That was the plan all along, for us to bring you back here so that you could spy on the Federation.
ERIS: Well done, Commander.
Quark and Sisko managed to get the collar off of Eris so that she could use her telekinetic powers to help them escape. But it turned out it was all an act and the dominion actually wanted Quark and Sisko to escape. So if they would have left the collar alone instead, what do you suppose the dominion would have done to provide another avenue of escape for them? They just let the Odyssey rescue them? A friend of Eris helps breaks them out? Dig a hole under the force field maybe