They are still spare peak time slots though.
The slots are being flown by British Airways today. They are not "spare" per se and British Airways has added a number of services such as Billund, overnights in Gothenburg and Venice and various leisure services during the time those slots have been available to them through lack of any operator taking up the remedy slots. It remains to be seen what services BA will reduce to free up the remedy slots as they are obliged to do, but they certainly cannot be classed as "spare".