There seem to be a few potentially creative journo's here.
Firstly I failed to read that the civilians had seen a Harrier strike anything. The report stated that "Military aircraft were reportedly seen in the area following the crash".
Secondly there was no report of a Harrier tail being damaged. A local did find a piece of wreckage that he claimed had been identified as part of a Harrier. Given the number of Harrier bits scattered around Norway that might be true, but is there anything that ties it to this incident?
Where are the published times that would support the theory?
ie civilian aircraft crashed at xxxxhours and the (reportedly) damaged Harrier landed at xx30 hours.
Lets get the evidence before we accuse anyone (and it would have to be the entire Nato organisation) of a cover-up!