Jib and Main Halyard Trouble
Masthead designs vary with each boat. One thing that might help you direct you helper is to look at your masthead through a set of binoculars to see if there are any hints. What you have described sounds like your main halyard is wrapped around your jib halyard and perhaps is pinned against one of the compression blocks in the mast. Few things are more frustrating than trying to reeve a new halyard with out some form of messenger line.