Paphiopedilum in s/h and new leaves keep dying

[datperson12345]

It's not in the picture, it formed overnight, it was brown and soft and when i push it it would bend. I was pulled the leaf slightly to get a better look but the whole leaf go ripped from the base! after that i dipped the plant in water with a tiny bit of hydrogen peroxide and there was no fizzing.
my main question is now that i pulled off the infected leaf, is my plant safe from the rot?
i wiped the whole plant with cinnamon on cotton just to make sure its dry.