Seedling Vandas with sad roots :( Help PLEASE!

[cdahle]

Hello all! I'm new to the board, and I hate to be a downer on my first thread, but I've got a very urgent concern..
Last week I received some vanda seedlings via mail. They are my first vanda types and I'm super excited to grow them, but it seems I've hit a roadblock.
They came in tiny plastic pots with loosely packed sphagnum. The moss was still slightly damp when I unpacked them and the foliage all looked healthy with the exception of the smallest one that has what looks like a nasty sunburn.
In accordance with my new orchid procedure, I took them out of their pots to get a look at the roots and my heart sank. A lot of the roots were brown, some of them were shriveled, some were still plump.
I really want these little guys to become fine adults, and not be killed by root rot while they're still so young. At the moment I have them bareroot in separate containers, soaking them for 15 minutes twice a day, in addition to regular misting. I've got a low humidity so I'm making sure they're well hydrated..
I need to know if I should cut the plump brown roots or leave them. They don't have many roots as is, and I don't want to trim them if the babies need them. Also some tips on how to prevent any further rot would be well appreciated. Thank you in advance!!

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