If this has the effect on recruitment and retention of personnel that some predict, it absolutely could be changed. I don't know whether it will have a significant impact, but if it does, it'll definitely be scrutinized again.
What will happen in a catastrophic enlistment reenlistment shortfall scenario is a draft will be reinstated. There will never again be the political will to stand up to the gay Mafia. No, America took a huge shot in the rear, thanks to the bend over and spread ‘em Repukicans in the 111th congress.