G'day Ken. I've worked on a mate's TreK 1130, but never with its wiring. I don't know if the Athena and Walbro ECUs are the same connector-wise, but the sensors they connect to would be.
What you describe sounds suspiciously like the safety system has triggered. The Tornado has a tip-over switch which also cuts everything, including the dash (IIRC), if it triggers. Not sure if the TreK has a TOS.
Parts in Oz can be procured from MV Agusta Paramatta, or, even better, from Alex at Maniac Motors in Germany. Alex and the gang all speak English, and if you ask him for a quote you'll find his prices quite reasonable. I've been dealing with Alex for 10 years or more.