piperboy84,
Whilst I am certainly not faultless with a cross-country overhead join that must have really confused a student and instructor at Fife a few years ago (it did have the added benefit for the instructor/student of a practical example of how not to do one!), I was unfortunate to recently witness an overhead join in the same general area as yourself where the pilot reported overhead then announced they were descending deadside and turned against the circuit direction. Their initial call that they were joining direct to a left base was met with a suggestion that they should join overhead like the other five inbound aircraft.
I'd be interested if it was the same aircraft, so to keep this simple, was the aircraft a standard design or was their something different about it ? (Y/N) I'll understand if you'd rather not answer.