my understanding of what happened is that a male cyclist had a mechanical problem and stopped... got off his bike and was squatting down to try to fix whatever went wrong... (I believe he was part of Chris Carmichaels mechanic team) anyone, by squatting he appeared very small and the lion attacked and killed him... the recent fires have severly depleted the lions normal food supply... so the lion dragged him off and half buried him as tehy do... when the 2 females rode by the same spot the lion attacked looking to protect it's meal... a natural instinct.
IF you ever encounter a mtn lion (rare but obviously happens) get off your bike and hold it over your head... the bigger you appear the less likely the cat is to attack... also yell and make lots of noise while holding and shaking the bike... the bad news is if you try to race the lion, you will lose. So make a stand and appear BIG!
There is a fine line between "hobby" and "mental illness".