Vanda with mushy roots

[pickachu_mcm]

Hello,

I received a Vanda orchid about 4 months ago as a gift from my parents. I don't know how they bought it, but they gave it to me in a glass vase with very little bark.
When I moved the orchid at my home, all the blooms fell.


That vase had no draining holes, so I moved it into a transparent pot that has holes. I filled the pot with bark.

At first the flower was ok, a new leaf begun to grow, but recently I noticed the leaf wouldn't grow anymore so i decided to get it out of the pot to see if the roots are healthy. Also, come leaves had fallen recently. (in the pictures you can see a black spot, but it was there when i received the plant, it didn't grow since then)

As you can see in the pictures, there are some new roots that are thick and look healthy, but the old ones are musty and very wet, even if I soaked it a week ago. I usually soak the pots in water for about 15 minutes and then let them dry. Today when i got the orchid out of the pot the bark was very wet. I didn't put the flower back in its pot, i left it dry out.

I don't know what to do, should I repot it back, or should I put it back in the glass vase? Maybe it would be a better idea to buy a basket and let the roots in the air? I don't like very much that glass vase because it gives me the sensation that the leaves are not comfortable in it.

Any help will be appreciated. Thank you in advance,
Ioana

PS: I attached several pictures: in some of them is my vanda, in one of them is a pot with a phalaenopsis( the pot is identical with the one holding the vanda orchid), and the glass vase