What a fascinating story but a bit too conspiratorial I think. The real story is a bit more mundane, but not a lot.
The vehicle in question was one of two lost by the Vandoos in the spring of '95 near Coralici, March or April I believe. One of the coys had been invited to the local Boz Serb bivvy for some getting to know the locals. They travelled by ML but took 2 x AVGP along as security. All the vehicles were left in the veh park with the drivers. Anyway, to make a long story short, about an hour or so into the festivities, the Vandoos suddenly found themselves the only ones without their weapons drawn. The Serbs made a dash for the vehicle compound but the drivers managed to get both Grizzlys moving, albeit sans gunner or crew commander. Anyway the two vehicles bolted away from the Serb camp but got hung up at a checkpoint a few kms down the road and both vehicles, fully kitted out, were grabbed by the Serbs (along with the MLs I think). The Vandoos were allowed to keep their pers weapons but had to walk out.
I think at the time there was a lot of thought that the drivers had screwed up but they were hypersensitive about bajaing with the AVGPs on that tour after one ran over a local child who had dashed out into the middle of the road.
As for the Serbs, they were grabbing anything they could lay their hands on. Anyone who was there remembers that the summer of '95 was quite hairy (that was the summer of Srebernica, hostages and airstrikes). It was also the last roto for Op Cavalier as IFOR went in afterwards.
At the time I was with 2VP and we were gearing up to replace the Vandoos in Coralici. The Grizzlys were part of our intelligence briefing (along with the story of their seizure) and, as I recall, the ROEs allowed for the seizure of the vehicles if we came across them, including destruction to prevent their use by the belligerent forces.
Anyway, after OP Cav ended, we were bumped from IFOR (2RCR went instead) and, I think they moved from Coralici to Zgon soon afterwards.