`What I think ED means is that the Bais Din will not grant her request for a Get, not that the Torah does allow the wife to ask for a Get.
“If ED has a source for his strange din, then Rabbis cant decide against the Shu”A.” This is not so, for example in Orach Chaim 55:6 the Shul”A states that someone sleeping is counted towards a minyan. The Taz argues and says he is not counted and the PM”G and others hold that you can only rely on the one sleeper in an emergency so Rabbis do argue on the Shu”A.
As far as using violence against a Get Refuser besides it being illegal (at least here in the USA)and can have severe consequences. The husband could end up dead and everyone involved including the wife ends up in jail. Or the husband can fight back wounding and or killing some of his attackers. You also run the risk of losing alimony, child support and custody of the children if the ex-wife had anything to do with it.
Also a forced Get isn’t valid according to Jewish Law so I am not sure what is gained by beating the husband up. Even if the forced Get was approved by the rabbis, unless they want to publicly admit to violating the husband’s civil rights and subjugating themselves to both criminal and civil penalties, the husband can claim the get was forced invalidating the Get.