I don't have a copy of the updated Ceon URI up/open to see how the observer is incorporated, but seeing that there is no specific call to the observer, then it loads at point 175 which is after the crumbs ran at 170. So to specifically support the rewrite of the breadcrumbs, the Ceon observer would need to load before the breadcrumb of 170. This would be accomplished by adding an includes/autoloader file to specifically load at least that one observer point prior to 170 (168?).