That is a root. Phalaenopsis can and mostly do grow roots that are in the air. I make sure that when ever I water or mist my orchids, I wet all roots air or otherwise. Roots are necessary for orchids so healthy roots lead to healthy orchid. Most of the orchids 'breathing' happens thru the roots. That is why orchids must be potted in a medium that allows the roots in the media to breathe.
As for the spike of flowers, phals also generally respond well to 15-20 F temperature difference between night and day. That triggers many types to go into the flowering stage. That is if the orchid has stored enough energy to support a flower cycle. So it is not unusual for them to flower this time of year. My experience shows me that phals can flower at any time of the year and that is part of the fun of phals. Get them real happy and they can be in flower for months on end.
Looking at your picture, it looks like the media your orchid is potted in is dirt. If it is, you must get it out of the dirt as soon as you can. Also the pot you are in doesn't allow for any air exchange for the roots. I think you should be glad that the root is in the air, you at least have that one healthy. If I am mistaken about the media, I apologize.
I have a saying I grow by:
Grow the roots and the orchid will follow.
Advice that applies to all orchids.