it's not exactly the same, but ian thorpe dq'ed on oz trials for 400m for athens ( he inexplicably fell into the pool ) - this was a guaranteed gold medal the ozzies woud have lost if thorpe hadn't swum it in athens
feverish behind the scenes activity led to the 2nd qualifier ( craig stevens ) giving up his position on the individual "for good of team oz"
it's not likely to happen here, but it's not beyond reals of possiblty that nastash or weinerg might be paid a sum by maybe the shoe company of sanya to give up their slot - they may just say :
"you get $25k sponsorship/year currently - quietly give up the individual spot & just keep the relay one & we'll up your sponsorship to $75 - 100k for this year"
realistically, after the hard seasons these 2 youngsters have had & quality of osaka opposition, they'd do extremely well to make the final, let alone medal, so an extra $50 - 75 may be a decent business proposition to give up the slot to sanya