Either way tonight will be the last shot Darius has to make an impression, basically it's sink or swim now.
I don't think that is the case at all. If it was, then it was total waste to sign him in the first place. The Celtics went into this with their eyes wide open, they knew basically what they were getting in terms of his basketball ability at the moment. You don't miss 2+ years, then get it all back in the span of 5 preseason games, there is no way the Celts brought him in, expecting him to WOW them, knowing what his current physical state was. His own trainer has said he is only 80-85% back in terms of explosiveness, thinks he won't recover all of that until Christmas.
If the C's brass was anywhere close to this assessment also of his physical state, they could not have possibly expected that he would be jumping out of the gym, moving freely at this point. The only possible reason to sign him was the hope that, with time, he could recover a significant portion of his previous athleticism. There is no way they thought he would display that at this point of the preseason. The evaluation at this point, is more in terms of his attitude, buying into "the way the C's play" as Doc likes to say, and being able to accept a role which requires defense to be the most important thing. I am not sure what they think of his ability to fit in at this point, but his lack of explosiveness was to be expected, not seen as a failure.
Darius has looked a step slow for sure, but shoot, I could take 2-3 months off from playing, and it would take awhile to regain my form, let alone 2 years and having recovered from major knee surgery. Fans here may have had too high expectations, and because this is the first they have seen him, are suggesting him performing less than ideally physically right now, means he is on the chopping block. He may indeed fail at this comeback, but the C's aren't going to pull the plug based on his physical play right now, the only way they would do that is if his knee is absolutely shot, or he clearly won't/can't fit in with the program. I doubt we are going to learn much more about anything from tonight's game.