<human>: Summarize the given text in a few sentences.

The story:  The last 6 months our employer has been making organizational changes that many of the seasoned veterans are not all that happy with.  Insert cube mate and myself, having similar feelings about the situation.  To cope with hating our jobs and the changes that are being put it place we send joking emails back and forth and generally try to make light of the situation.  

Today is like any other day, joke around, doing our jobs.  I shoot a sarcastic email to my buddy about something my manager says, then walk away from my desk do help out a user (I am a helpdesk worker), not thinking anything of it.  Apparently during this time, manager stops by my desk and sees the email i sent to my buddy.  Later on, we both get called into the office (separately).  I get asked about the email, I say it is something that I do to blow off steam, it doesn't really mean anything.  He accuses me of "spreading negativity" to my coworkers, which leads into a long, heated debated about firm changes, politics, and my overall happiness at the firm (pretty much nill at this point).  He ends the conversation, and a few minutes later my buddy gets pulled in for the same thing.  A half hour later he gets escorted out.  

I feel terrible because I feel like I had a hand in his getting fired.  I was the one that wrote the email, I was the one that did not lock my workstation when I left.  If not for those things he would still be there.  He wrote me an email with the outcome and things he discussed during his discussion and told me that it wasn't my fault, that he was on his way out anyway, and that now is as good a time as any to leave.  I still feel terrible.
<bot>: I write sarcastic email to buddy, boss finds it.  We both get accused of "spreading negativity".  I get off with nothing, he gets fired.  I feel like shit.