New pad time
You can try to heat them with a blowtorch to burn off the oil though this probably will not work.
It is unlikely you can wash them clean with alcohol.
Not necessary, thoroughly cleaning them and sanding them down before getting new pads.
Need alcohol anyway to clean rotor.
BUT it could be wheel not sitting straight or pads misaligned due to levers being squeezed without wheel.
@edscoble started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
New pad time
You can try to heat them with a blowtorch to burn off the oil though this probably will not work.
It is unlikely you can wash them clean with alcohol.