Just what are you using for coolant, looks like its made a right mess.
There must have been a big build up of pressure to do that sort of damage.
Can't say I've heard of the hose manufacturer before but I had look at their website
http://www.airmaxsport.co.uk/ and it reckons 5 bar pressure is an OK working pressure, thats about 70 Psi, way above what you'd expect in a Ducati cooling system.
They don't appear to list a Ducati Kit on their website but appear to flog 'em on Ebay???
You are sure there are no blockages in the little pipes on the header tank as per link?
Ray