Bowson once bubbled...
Buddy! Buddy!
TDI Does not have any insurance coverage for its instructors for the insperation rebreather not from Marsh or any other insurance company. This is why those guys were in direct conflict of TDI's mandate, standards or what ever you want to call it. TDI instructors can not and are not permitted to teach the Insperation in Canada.
I beleive the instructor is a IANTD Insperation instructor, therefor covered. he was teaching the TDI guys to be Instructor trainers.
just watch and see what happens real soon.
buy the way why is it such a big deal to you, you seem to be very pissed off by this