Why the continued stall? I believe JGT's reason for SH not taking the zoom call is an outright stall tactic.
I know where SH works when he is not in the Vancouver area.Yes Baffin Island is remote...but it's not like you can't get a call out to alert or change a time or date. Surely his location has satellite phones for emergency needs.
His schedule for work is such that he has a bank of time in Vancouver every three weeks or so, that could be used to take this call if he really wanted to be deposed. BJ and therefore JGT must know this. Why have they not managed to arrange the deposition call for SH when he is in the Vancouver area?
IMO it's because he just doesn't want to be deposed, and they will continue to stall until they can find Thornton to be deposed.