Trust and honesty brings your work relationships to the next level.  We spend 5 days a week, 8-9 hours a day with your co-workers.  So why not be open, honest and trust worthy? Why play office politics? Is it necessary?
Last night I caught up with my old boss who was made redundant (aka laid off).  What I suspected at the time of his departure was confirmed by him.  My current boss was already selected by the senior management team to take his role.  Is this really and truly redundancy?  All they did was change the title of the position.  
What I found out was that my current boss, was already positioned for the role.  However HR was required to go through the process of interviewing external and other internal (me) candidates for the role.
My current boss didn’t even have the credentials to take on a role like this at any other organisation.  Why would they think he could do it now?  He even had the audacity to ask my old boss how he would answer certain questions that they might ask him about the role! How would you feel if you were made redundant and then someone comes to you for advice about your role he/she is going to take? 
That’s life.