from what i understood the Oaths are all about the opinion of the oathtaker. There is no major power forcing things upon them, but a mental/physical inability to do things that you perceive as breaking the oaths.
This means that an Aes sedai cannot go into a circle knowing it will be used as a weapon without provocation. But if they are tricked into a circle, there is nothing blocking the master of the circle to use the full power of the circle as a weapon. Of course, as soon as the aes sedai notices the real goal, she will feel forced to try and escape it if she cannot consciously comply with the Oaths, but at this point, that is mainly impossible.
As my opinion on the seanchan bracelets: As the book often suggests there are ways to remove the oaths. i always figured the seanchans knew of this and at one point in time forced this upon their da'mane. seeing as they were basically given their knowledge by a black aes sedai or one of the chosen dark ones, i think it is plausible this knowledge was passed with it. We never saw it in the book as the character was never far enough in the process of being mentally broken to force this.
the fact that the bracelets do not physically force them to do anything, but only causes pain and other things, means that the da'mane still choose to follow the orders and thus would still be bound to their Oaths as they are aware of what they are doing. This implies the oaths not applying anymore. How they are broken is for the reader to guess, but in the earlier paragraphs i suggested my opinion.
happy to hear your opinion on these topics and read what i missed/got wrong.