Muenster We Are ... and Monster Minion

[sapph42]

Playing Munchkin Bites, Nick has the Monster Minion played. It states

May also be sent to join a combat in which are you not participating. Counts +3 for either side, and is then discarded.

Amanda plays Muenster We Are, Yet Muenster We Become against Nick. It states (in part)

You may not ... play cards that affect [other players'] combats, until...

.

Can the Monster Minion card be discarded for its bonus in Amanda's next combat? Muenster restricts Nick from playing cards to affect Amanda's combat, but Monster Minion was already played.