You should be able to do it without taking the whole thing apart, you'll probably end up having to break the 3 bolts off, but that's not a big deal since the new one should come with new bolts. I used a nut splitter to get the big nut off instead of busting my knuckles trying to loosen it, since you also replace it anyway. Did mine in a couple hours (at the most) still haven't gotten it aligned and it's driving fine.

2001 Sportage, TJ 106's, Everet spacers and bumpstops, Bilstein shocks on the rear, cone filter, Crager wheels, 235-75-15 Goodyear tires. Custom front winch bumper by Dave Scott. Currently DOA, but it is a work in progress.
2011 Kia Forte EX