FYI - I have seen VIAIR compressors submerged and then frozen in a block of ice. When thawed out, the compressors worked just fine. I’ll see if I can find the photo, it was amazing!
I would let them thaw out a little bit. Back in December, Seattle had a HORRIBLE snow storm and so much slush and snow got on my horns and airlines. I didn’t realize it until I tried honking them and it sounded like some old guy farting lol. OOOOOOOOOOOOOOOOOOOUUUUUUUUUUU I thought that I had blown some airline or that the ice had damaged the horns, but after a few days of warmer weather, they started working fine again. Be careful though.