I was in Washington for the past two weekends, so I really don't know about Bert. I am sure a lot of the south facing stuff has melted out. You are correct that the freeze/thaw cycle helps solidify the snow pack. Only if it gets below freezing at night. Which I believe the last few nights have. So North facing lines should be good. Timing is the key issue. You probably want to be done with your tour by noon these days, before the snow gets too wet. Once water percolates into that depth hoar layer, it'll be fairly easy to trigger a big avalanche. On the flip side, water percolating down there, then freezing should help reduce that layer too.
Hopefully, I'll get the Washington trip report up here in a day or two. I took over 2k photos, and have gotten through about 2/3 of them. Got a fair amount of video too. Let's just say, it was rad.