Recently I was working with a candidate and helped him to leverage a new position in leadership with a national firm. The company made a good offer which he promptly accepted and arranged a start date. Early on during the on-boarding process something came up not to his liking and he emailed me on Easter Sunday. It was an issue that I was certain could be overcome and told him as much and he agreed to allow me to follow up on Monday morning. By Sunday night something changed and he sent a scathing email to the hiring manager and others in the company. To call the message less than professional would be an understatement. I quickly responded to him privately yet he was steadfast in his anger. The hiring manger opened the email shortly after and handled everything is stride and resolved the concern by early Monday morning.
In this instance it appears that everything will work out but my counsel to anyone is to not make a call or send an email when frustrated or angry. Bad choices are made that may not be undone.