Headache in a Suitcase said:yes grammy winners and performers tend to get a sales boost after the show... all that you can't leave behind jumped into the top 25 a year after it's release following the grammys... but is a temporary 2 week boost in sales really enough for them to scrap their ideas and go back out to do stadiums in north america?
i sure hope so, but i doubt it.
If the album sold a staggering 1 million copies(just in the USA) in just 4 or 5 weeks following a Grammy sweep, they might think about it. Even if they sweep the Grammy's, album sales in the following weeks are not going to be anywhere near that although there will be a massive jump in sales from where the album is now.