ZPool offline

i had two disks on a Z1 pool go offline at once due to a power splitter coming adrift in the case. ( not sure how that happens in a sealed case ! IT gremlins ?)
anyway that is now rectified. The BIOS sees the drives but Zpool status is offline in the dashboard. status "unknown" in the Zpool section of the UI and all the disks that were in that pool are showing as status "unused"

can i import the disks back ?


any thoughts on how to proceed ? Should i disconnect the pool and try an "import"...

ZPool offline