I had to orbit on final at Southend of all places a few years ago when a Shed landing ahead of me shed a tyre: it managed to vacate the runway but they wanted to send a vehicle out to pick up debris.
I was at 300 ft and was told to orbit right for 24.
Even though at the time I had over 400 hours, this was way out of my comfort zone so I told ATC I was going to clear to the NE and re approach a bit later.
Highly inconvenient as I was on my way to France and was dropping in to Southend to clear Customs and it would have been tempting to continue to orbit: However it would have meant cleaning up from approach configuration, perhaps even retracting the gear and all the time the ground looked awful close.....
I really feel for the poor student on his second solo having been given unusual instructions in an unusual way...........
Cusco