I kind of know what you feel like...not exactly the same, but I decided to go AWD since there was, in my opinion at the time, very little chance of the rebate deadline being changed. When the decision came yesterday, I felt a pit in my stomach for a bit, because I thought "my 5k AWD upgrade just became a 20k upgrade. If I had just risked it and ordered RWD...."
But there is no predicting the future, and I'm not sure if tesla saying they were suing would have changed my mind at the time. It's easy to armchair quarterback but I don't think many people actually expected the legal action to be sorted out this quickly.
On the flip side, if tesla had said "we are taking Ford to court and we feel we have a strong case", but then lost the court case, I'm sure anyone who kept their orders would be totally freaking out.
They did the ''safe" thing by not divulging the lawsuit until it was filed....in actuality, they probably had their lawyers write it all up, then management made a final call on whether to file it at the last minute. I'm sure they had internal debates on whether they should pursue the court case, and if that's true you can't really expect them to make public statements about things they hadn't fully decided on yet....
Either way, 24h later, I'm still at peace with my AWD decision. I think you have to ask yourself; would you be happier keeping your order and not getting the rebate, or not getting the car, and having the rebate come back for a ~2 week window. Tough call, but I expect most people would chose the latter.