lol that makes alot more sence now.
I had been wondering why you had wanted to enter encypted text and then send it decrypted across a channel, but thought, well each to there own.

As far as what you want to do, I dont beleive it can be done, each ON text event handles the raw text sent by others to the channel (or at least the text after options/irc/messages stripping selections takes effect)