i think that she knew that the audience are not going to vote for her.. so she used the strategy and blanked out on purpose . so that when she comes in the dance off she can do the dance far better than wht they did on the friday's episode. n as far as i know judges compare the performance from yesterday and today and select the best..
This is just my opinion.. Please no offence to Gauhur's Fan..
Let me know what do you guys think?