Well... I'm probably not the best member to be replying to this since I'm pretty thoroughly reclusive. So I don't have a lot of personal experience dealing with difficult people (other than myself.) However, from what you wrote, the behaviors this person is displaying sound mostly passive-aggressive to me... perhaps with an overlay of some narcissistic tendencies thrown in for good measure.

The thing is... you only have a few days to deal with this. So we're not talking about long-range strategies that will make living with this person manageable over the long haul. That being the case my personal thinking would be to just try not to spend any more time around him than is really necessary. And when the two of you are together try not to react to how he is acting.

Here are links to 4 articles, from PC's archives, that offer suggestions for how to cope with passive-aggressive people. The first article is by DocJohn:

How to Deal with a Passive Aggressive Person

How to Spot and Stop Passive-Aggressive Behavior

7 Coping Skills to Use in the Face of Passive Aggression

The Silent Treatment And What You Can Do To Stop It Cold

Hope something in these articles is of help. Have a good autumn.