Yep, mine also sprung a big leak after going South.(good thing my wife caught it when I just started to take a shower...STOP !...came the cry from the kitchen).
I removed the Hot/Cold taps and the square, plastic housing for those taps and it turned out that the PEX fastener just behind it came off completely...hose and all.
It was a relatively easy fix, except that it required a new PEX fastener with a "very clean cut" on the end. Fleetwood left me almost no hose to work with so I just barely managed the fix. That was a couple of years ago...so far so good.
2009 Fleetwood Icon 24A-Sprinter Diesel