You could just align it in columns without writing a full sentence. Separate it all by tabs so that the first column is the person who kicked, the second column is the person who got kicked, and third is the reason. You could just make a variable like this
Code:
var %kickline = $nick  $+ $chr(9) $+ $knick $+ $1-

Then you could just write %kickline to your file. Note: you might want to space it out more if nick lengths are too long. Just add another $+ $chr(9) there.