This case turns the usual defense procurement bugaboo on its head.
Not really.
This decision won't stand. The DOD will not let some meddlesome judge stand in the way of a security need, and friendlier judges will quickly overturn it. (It was a temporary injunction anyway).
Look people, this is just to get their (Air Force's) attention. It isn't going to be a permanent thing, by simply making headlines it has served its purpose. (Note that the Russian's will probably block the sale anyway soon).
DOD will promise to revise the bidding, they may also tell Pratt and Whitney to start manufacturing these engines in western countries (P&W bought the license to do this a long time ago, but it was never economic to do so in the past). This isn't particularly difficult tech to build when all of the plans and specs are already in US hands due to long existing licensing deals.
But mostly, the purpose was an attention grab, to demonstrate how stupid it is to encourage US companies to develop lift capabilities and then turn around and buy Russian made engines on a sole source contract.