Well according to Bright Lights Dark Shadows this is very true. They were working on the album but felt much of it was sub-par, so buggered off to Miami where they got their inspiration for the title track and much of the rest of the album.
Apparently the fighting in Bjorn and Agnetha's marriage was a huge problem for the group and drained everyone of their creativity. Then they split up and it opened up a wealth of material.