Object too far... see it but can't reach it, can't erase it !?!?!?!?

An object is too far, I "see it" (blue lines) on the first view (top left) but I can't erase it !?!?!? I can't do anything about the error... can't move, can't zoom, anything !?!? I can't even erase the path..... Need help !!!

http://prezi.com/lfr_wie5wyjs/edit/#1...