Sounds like it.
I think there are replacements and accordian style extension hoses available,
that might fit in your storage tube.
You might want to start at a Camping World, or an RV Center near you. I'm sure they can help.
Here's what RVnet had to say about hoses.
http://www.rv.net/forums/index.cfm/fuse ... 851358.cfm
You can also search this forum for info on hoses and sewer parts and options.
Just enter your search words in the little window up, and to the right, on this page.
There's lots of hits for "sewer" and "hose" on here.