Episode 8 thoughts: Was Hawk acting out of character in getting Tim the job?

I finished my second run-through of the series last night, and I feel like one loose end that still wasn't quite tied up for me was Hawk helping Tim get the job in the Refugee Relief office. Hawk is consistently presented as being extremely cautious about his life in every other instance: he tries to foresee every pitfall, knows how to cover his tracks, always has an escape plan, etc. Helping Tim get a job where they would be in contact every day flies in the face of all of that. When Tim points out that they would now be colleagues and you see Hawk's "oh shit, what have I done?" reaction, it seems so out of character: wait, that's only occurring to him now? How could he, of all people, not have thought this through?

On a related note: once Hawk realizes (correctly) that Tim's taking the job would probably be disastrous for both of them, was there really no other way for him to prevent it? Did he have to go so far as outing Tim to the M Unit? Could he not have just convinced Tim that it was a bad idea? Or do we think he was deliberately acting in a way to make Tim hate him, to finally create an unbridgeable gulf between them?