回复：it was a big mess

1." blame the others who were in charge of them;--all gone. so no one to cover up now. "
Since they were gone, they are the best scapegoats

2. "consider stay and present the case yourself;--this is why I wrote the report so that I don't have to be there. all details are in. "
Do you expect seniors read your reports?

3. why did you uncover them at the first place? --not me personally. When those people left, I took over their responsibilities. We have a product review for submission. The mess was uncovered by another department. I happen to be the owner of this part and the ocntact person with that department.
why didnot you try to contain it in a very small scale?