I know non pilots have a strange meaning for an aeroplane "circling". But I find it strange that someone reports it circling first if there was an engine failure.
Then that the pilot lands due to a fuel blockage and they subsequently take off.
If there was a fuel blockage, I doubt that they'd have sufficient time and energy to do what that public would call circling.
If I had a fuel blockage, I doubt I'd be taking off again without an engineer looking at it.
On the other side I suppose they could have been simplying scrubbing off some additional height (unlikely if the failure happend 2km off shore as reported), or just making a positioning turn. And are these kit built? If so perhaps the owner know what he was doing engineering wise, and the tide was coming with no room to keep the aircraft there safely, so a take off was required urgently.
But I am somewhat questioning about some of the details. There might be more to it than reported.