Things like swinging a chicken around or dunking her in cold water aren't going to affect the hormones that are causing her behavior, but these practices might well injure your chicken. I wouldn't ever do these things myself.
You can sometimes discourage a broody by taking away her ability to nest. Sometimes they'll give up after only a few days but sometimes she'll persist. I have a part d'Uccle hen who I persuaded to give up broodiness several times over the last year simply by blocking her access to the nestbox. But late this summer, she persisted for about three weeks (the normal incubation period) before she gave up.
If a hen is really determined, it doesn't matter to her that she's got no eggs to sit on, or if her bottom is on wire. You just have to wait these hens out, I think.