Hi WindNZ, yep I have to agree with all of your post, based on what has been reported sofar at least.
The aircraft is on Air Transport though and is just not a 'normal' GA operation.
I did a factory liaison visit and then a Trislander rating course at Aurigny many years back. They had a large fleet of Trislanders at the time and operated them very much as you would expect a small airline operation.
I can't for the life of me recall the brake system but it did not normally give any problems. It would not be too much different to the Islander installation.
Perhaps we should mention here that it is not normal practice to leave any aircraft parked with the brakes applied.
GBA have attracted a bit of adverse publicity admittedly, - it is a shame as generally a well set-up Trislander should go pretty well.
At least the newspaper reporting seemed more balanced.