This was relatively easy to predict. The Pentagon gets its hand slapped by Congress for unfairly changing the RFP 1/2 through the process on the first time. So, in retaliation, it opened up the bidding, with originally modified RFP (no change) knowing Boeing can't commit the 777 line...almost as punishment to Boeing for appealing in the first place.
If Boeing doesn't bid, it's a single-source contract, and we all know that the taxpayers will take it in the butt.
Yep, Cha-ching to the tax payers once again.