IMHO I would keep the bar in place. It took some getting used to, but I have learned to like the bar. It has prevented several capsizes.
On the other hand, if you really want to get rid of it, many 5.2 owner do. You will have to add throughbolts to the front (main) beam straps. The only reason for the bar is to keep the front beam from rotating under load. I know there are a couple of current or previous 5.2 sailors who have removed the beam. You would have to ask them how many bolts and what size to put through the mainbeam straps. I still vote for keeping it. It's just a way of your boat showing how much it loves you by bruising your knees and shins. <img src="http://www.catsailor.com/forums/images/graemlins/crazy.gif" alt="" />