phal amabilis - lower leaf turning yellow

[ladyslipper]

Hi guys, I repotted my phal amabilis about a month ago and have noticed a bottom leaf has turned yellow. Normally this is no sweat as the rest of the plant is fine and is growing a new leaf at the top. This bottom leaf is laying flat against the bark with a root ontop of it. I want to cut the old leaf back with a pair of fine point sizzers (sp?) but am leary about doing this due to the tight quarters under the next leaf up. Question is, should I let the leaf wither back then try to pull the leaf off assuming the leaf is only weakly attached to the plant? any recommendations greatfully read..thanks m