Well, I can understand that. It took me a full day to get mine back together. I took it apart to get the broken part of the mast out.
Putting the whole assembly in is no big deal. Just remove the back panel in the trunk and the left side panel should just pull out. All you need then is a 10mm socket and an antenna wrench may help. Otherwise, just use a flat tip screwdriver to undo the antenna nut and be very careful not to scratch your paint.