when 3rd Density deactivates

[anagogy]

I think what he's saying is that fashioned 1D material, once fashioned, is not any more ephemeral or dependent on 3D than non-fashioned 1D material.

Yes, 3rd density artifacts such as those will most likely take some time to dissolve into their unformed 1st density constituents, depending on the environmental conditions as 3rd density goes into potentiation.