Recently, based on my collaboration with someone else in our department, we submitted a paper to a highly reputed journal (IF ~ 8) and we received a minor revision a couple of weeks ago. My name in this article is the second author. The first author is a PhD student, who would be graduated next month, the third author is a professor from a national laboratory, and the last one is the PhD adviser of the first author.
From beginning of this project that lead to the submission of this article, I was involved in modeling and its details, input data preparation and output information interpretation, as well as reviewing the draft paper before submission. There was no problem at all before receiving the revision and the first author and his PhD adviser acknowledged and my contributions.
Today, I was informed by the first author that my PhD adviser that has nothing to do with paper at all, accused me that I didn't have any contribution to this paper and I don't deserve to be on the authors' list despite the fact that I had contribution in developing the model, gathering the input data and interpret and discuss the outputs as well as reviewing and revising the draft paper before submission. Even, the initial idea of the whole project was mine and I proposed it to the first author due to the fact that first author's area of expertise is not modeling or computational science.
I'm so angry (again!) and I don't know how to respond... The first author and his PhD adviser are in my side and they want to prepare a summary of contributions for all authors including me to close this case, but still I'm going to lose my mind. So my question: Is this possible to drop an author from authors' list of a paper after revision? What are my options at the worst scenario? Is it normal (of course it's not!) that somebody that has nothing to do with a paper question the contribution of a paper that is not published yet even?