That doesn't look too good, I also treat my gear with Less than Tender Loving Care, Cart them through Africa 2 to 3 times a year, don't have anything like this sort of issue.
Love to be able to help, but I don't think Canon Warranty will do much about this after a year, but worth a try, if all else fails it might be time for "Pimp your Camera", cant find a Photo of a Canon so posting an Image of the Dark Sides Equipment, gives you an idea at least. pimpyorcamera.com but not cheap, about 750 +/- per Body, an all Black with some Motif may be cheaper, I honestly don't know, sorry to see though.