ehhh, correct me if i'm wrong but an aircraft on final approach has priority over all other traffic !!!
if the airbus had gone around - and something had happened, (most cocked up manouver in flying) me thinks the controller would be looking for another job !
commercial flight plans operate to +/- 3 mins ? i,m sure bucket red 6 or whatever they call themselves could have found something to occupy himself with for 10 sec's !
