Hello and welcome to the forum.
That orchid is certainly not dead, but alive and doing well.
First I will try to answer some of your questions.
1. Those are called aerial roots. This is normal. Don't cut anything that is green.
2. If the spikes are brown, cut them down. They won't hurt the plant, but I usually get them out of the way.
3. Does the pot have drainage holes in the bottom. If not, then you definitely want to repot it. Phals grow on the side of trees in nature and do not do well in sitting water. If it is just moisture from a recent watering, but not standing, then it should be ok. Take a look at this thread for more suggestions on watering.
Skewer use for watering of orchids
4. As for repotting, it is usually best to do it after blooming since that is when the plant will be growing new leaves and new roots. The roots in that pot look great. I would wait and see what others think about the repot.
If you could do one thing for us and update your profile to include your location it will really help with giving advice. We are from all over the world with very different growing conditions and it will help to know what you are working with. This will help to know where to suggest to place your orchid so that it will grow the best and flower again next year for you.