I love cutaways!
It seems to be a a standard thing in British comic books. I really don't know where it started. I remember that the 50's Eagle had them and Look and Learn.
This one is by the awesomely talented Kevin O'Neill. I always have a laugh at the cheesy rhyming they added to the Heroes strip and this cutaway is no different. Although 'Curse' and 'Reverse' are tough to make into a smooth rhyme.