I, and my collaborator (coauthor) from a different university had finished a work last year. We had submitted the full research article to one of the journal published by Springer. My coauthor was the 'corresponding author' for the same. We both had contributed equally to this work over a span of 4-5 months.
The article was submitted on March, 2016. Just after few days of the submission, the paper status remained as "With Editor". Till today (now) the status has not changed at all (not even the date of the status).
I have been trying to convince my coauthor (who is also the corresponding author) to pull out the paper from such a badly managed venue and submit it somewhere else. However, he is reluctant and not interested to listen to me at all.
Moreover, I can't (shouldn't) directly write the e-mail for the withdrawal of the paper, as I am not the corr. author. Moreover, it may create conflict of interests.
I have been thinking to step back from this collaboration. Is it a good idea?