White fuzz appearing on sick phalaenopsis orchid roots?? Help!

[emmajs243]

Ok guys! I need some help! I was given this orchid for free to try and save her roots were in pretty bad condition and many had to be cut away. Now a few days after cutting her broken spike and dead roots I see this white fuzz covering he roots and where any cuts were made to dead roots. I have read about mealy bugs but don't think this is what those are and I have read about snow mold but it doesn't appear to resemble that either. Also, it isn't on the media, just the roots. What can I do? What do you think it is?

EVERYTHING that came in contact with the orchid was disinfected with a 1:10 bleach solution if it could be AND alcohol and physan 20. I wore gloves and would spray them the same between coming in contact with the orchid.
The orchid had its roots sprayed with hydrogen peroxide, leaves with an alcohol, water, tad of dish soap concoction and the roots lastly were sprayed with physan 20. The media was brand new but I washed and boiled it and then soaked it and right before putting the orchid in contact with it I sprayed the media with physan 20 too.

Where did I go wrong? I definitely do not want to infect other orchids the same way so I want to correct my mistake. Also, any ideas on if this orchid is still salvageable?

Lastly, in the first photo you can see this strange indention pattern on her base or stem. Any idea what this is? It is very odd and it is spreading I think.