Couple of issues:

First, there are lots of militia types still hanging around Burns trying to disrupt things. Even if they go home, the wounds in the community will be a long time healing.

Second, reportedly the "occupiers" left a horrible mess behind. And cleanup can't even start until the legal investigation is finished, which may take a long time.

There's an article here on ways to volunteer for refuge cleanup. Not mentioned in the article are monetary donations, which can be made to the Friends of Malheur Wildlife Refuge.

If I hear of other possible ways to help, I'll post here. I'm just thankful they got those last four out of there without creating any more "martyrs." It was close, because the last one was seriously talking suicide for a couple hours after the other three had walked out.