I don't really understand why they brought Lachlan back just for the trial it was all rather strange and that scene Robert popped in to was simply random - I think the writer was on something when they pulled that script together and the producers fell asleep.
Also I don't see why Donny came back for a quick fire, stab and head bashing session it was also very bizarre.
I think a few people were on the sherry pre-christmas to pull last night together.