rockm

"The drying is strange because even the greenest is brittle here and there. Any other ideas of course welcome."

Junipers are notorious for remaining green long after they're dead. The dryness is probably due to a root problem--overwatering can cause this curiously enough. The roots rot and can no longer transfer moisture to the foliage--it dries out and dies off--sometimes not losing its green color.

I have a feeling the roots dried out and killed the tree... It looks quite dead, but looks can be deceiving, especially with a photo. I'd let it be for a few more weeks --outside. Keep it moist and in a place out of the wind and direct sun. Wait to see if new green sprouts appear on the trunk, especially at branch junctures...