I disagree (obviously). I don't think there's any way they can claim that negotiations had failed, when there were so many avenues they didn't even attempt to go down. I can see the counter argument of course, that they may have decided there was no point, I just don't buy it- too much of their actions lately have spoken of their lack of good faith.
The bottom line is, they didn't make their case to their staff- even last week, they couldn't convince employees to vote for these changes, and that has to be either a vote for redundancy (unlikely) or a vote of disbelief. And if they were ever going to get these changes, that was the absolute first thing they had to do, yet they hadn't done it at the last.
The other thing that's getting very little media attention is that they've renegotiated their refinery contract with BP- hey, it's almost like they had some ulterior motives for putting the plant on the brink!