It's fair enough that Brendan looked annoyed - what happened on Saturday night has completely jeopardized Lisa's chance of winning.
If there had been a dance off last weekend, Tom would have very probably gone no matter which of the girls he was up against, leaving Rachel and Lisa in the final. Lisa and Rachel are very much tied on public support, but Lisa is fractionally more popular, so probably would have won.
However, with Tom in the final, he is almost definitely going to win, as he has tremendous public support. There's a poll going on at the BBC SCD forum where over 500 people have said who they are supporting. It goes like this:
Tom & Camilla = 71%
Lisa & Brendan = 15%
Rachel & Vincent = 14%
Now, I know these are just 500-odd people, and may not reflect the public at large, but that's still a pretty compelling margin.
Obviously, it should all be about the execution of the dances on the night, rather than who you like (Lisa's so fake! Tom's a phoney! Rachel's so bland!) but sadly, it doesn't seem to work like that.