That bar is welded into place. I havent had a chance to get back on it, Ill figure it our eventually.Just a guess but I think you should be able to remove the bracket with the seat springs. I sure hope that battery is dead as a door nail.
Now that makes perfect sense...OE battery is a longer thin oddball unit. About a $200 replacement, probably why that battery was shoehorned in there. I'd sure relocate that with some new cables. $40 vs $200, no brainer.