New phal with dead roots/root rot?

[Blue.fusion]

orchid lovers!

I'm a newbie to orchids and am a little worried about my first phal. It is a beautiful tai lin angel x new eagle phal that is in bloom right now. I got it as a gift, purchased from a florist. Once I removed the bow and fancy decorations on top of the soil I noticed that some of the roots were completely dried out and shriveled, they looked like straw. I decided to lift it out of the pot to have a look and now I'm a bit in panic mode. There seem to be many dried out roots as well as some that look to be breaking apart. I removed some of the completely dead ones with a sharp and disinfected scissor but now I feel that it needs to be repotted. It came it a ceramic vase with no drainage and in it was a mix of earth, tightly packed moss and a few wood chunks. Does anyone have any suggestions as to what to plant it in and will this affect the few buds that haven't bloomed yet. Can my pretty little phal be saved? so much everyone I know this forum is going to be a life saver for this newbie!