so to clarify only the last "commited" card is "active"? i cannot use any of the previous committed cards UNLESS it has an out-of-turn ability eg guard
i commit my human ogre as first card, opponent commits his first card,
i then commit my second card,human blitzer. can i only use the human blitzer to tackle? or can i still use the ogre to tackle and does the ogre still receive 1 cheat icon every round until the end of match phase?
Only the committed player is active.. correct. You place the player, you activate any "when played" ability. You use his skills (optional except cheating).. and then he's done - unless he has a response ability that activates later in the round.
So for your second example.. the human blitzer uses his tackle, the human blitzer might then get to use his response ability... and the ogre does nothing more.. no tackle, no 2nd cheat token.