This report is not likely to be a Sasquatch at all. They tend to break off and disappear pretty quickly. This creature was seriously territorial. Thus we do get cases of Sasquatches throwing stones and sticks to scare unwanted guests, it is never this demonstrative. Those reports could also be not Sasquatches as well.
Unfortunately this encounter failed to produce tracks which would have confirmed that we are dealing with a Sasquatch.
On the other hand, the tracker did sense that it was a 'werewolf'. That is our friend the Giant Sloth. Its violence and territoriality strongly supports that option. Regardless this was a dangerous encounter and what they met was not prepared to back down.
With the territory identified, they need to go back and be well armed and careful. They need to get tracks, although this creature is likely wise to that as well.