Quite simple, the rude pilot on a straight in approach on long final should immediately be executed on landing. (Yes I know there is nothing in the OP's post that says or even suggests that the pilot on final was rude, or was on a long final, (though there's a suggestion admittedly he may have been on a straight in) but he's been found guilty on all three counts by the Pprune jury above lol)
With regards to the OP's question regarding a safe G/A from downwind, I'd probably climb straight ahead then once 1000' higher turn in circuit direction to rejoin via overhead. However in the situation described, Id probably slow down while constsntly trying to spot traffic, extend downwind a bit if necessary, then turn base before controlled airspace and g/a from that point if traffic still not spotted. Cant ever recall having to do that though - you generally spot the traffic eventually
Last edited by Mariner9; 7th June 2017 at 15:48.