You should be able to relocate the user/local origin by getting a checkmark with your cursor somewhere and then Alt/Option +shift to reset it to this point.
The global origin never moves.
HTH
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"