My theory is that Morrissey just wanted to open and end the album with ten-minute songs, so both songs were stretched to fit that description. After all the lyrics in Southpaw end way before the five minute mark, so the second half is like a totally different track. But it works much better than the needlessly protrected end of Teachers.This live version (below) clocks 5:57 and works, makes me wonder if Lillywhite and band extended the album version because
they didn’t have much material for the album(?).