The troubles during the 60's actually grew out of the civil rights movement in the north, which sought to address the massive discrepensies in the way that catholics and protestants were treated. Protestants were the police force, the local council and as such because there has been long standing bad blood between the two communities Catholics were very badly treated indeed. I was born in and grew up in West Belfast and recall a great many things I'd really rather not.... including the fire and attacks against catholics that is largely held to mark the beginning of the troubles proper.
To expect people who have lived as a community under the tyranny, and I really do not use that word lightly, of a protestant majority for a long time, to embrace the idea of Westminster solving their problems is to say the least mind numbingly naieve, but then that is often the response that one gets from people who have read a lot, and not lived the lives that they read about.
I am seeking only to point out, not whose right or wrong, because at this point that's not even really relevant, but what we ALL must do to stop a slide back to right where we started from, or possibly worse.
If you think that Westminster can cure this, then go right ahead and watch their best efforts flounder, but the problem is when they do, it will be way too late to stop what, at the moment can be halted if we all hold our nerve and work together.
The sight of soliders on the streets of Belfast again in any number is not something that the Republican community will not tolerate, and you may like that or not like it, it is a fact, so how will you cure this situation without making it all a whole lot worse, since you don't think the Republican movement should keep it's own house in order?