bus429,
I don't know never worked on a A320. In a case like this rub strip you have a choice, you could tape it down, you could remove it completly, you could remove it and reinstall a new rub strip, you could remove and replace the flap. We don't know what the situation was, but someone figured out that taping the rub strip in place was the correct fix for this situation. I haven't heard o an A320 crashing in India because a flap failed because someone did an un-authorizied repair to a rub strip so i guess they made the right decision.