Well, we kind of suspected that was the Government's position already, but "not going backwards"?! That's an utterly silly comment - it belongs to a time when the EU debate was divided between arch-eurosceptics harking back to the British Empire and European federalists equating more EU integration with "progress".
Europe and UK politics have both changed however (clue: the coalition itself). Clegg's assertion is a bit like saying that the Coalition's drive for more localism - which the Lib Dems champion - is somehow a reactionary move. Bringing back powers from Brussels to the UK means bringing decisions closer to people. That, Nick, is not a step backwards by your own definition - on the contrary.
The interview wasn't all nonsense though. Clegg did suggest that the UK's willingness to passively wave through an EU Treaty change, must be matched by reforms to the budget and changes to some of the EU's more counterproductive habits.