Question about list members masquerading as someone else

[pregen@egenconsulting.com]

I have a situation on my list where
I am fairly sure someone has signed on with a fictitious name.  Not
a problem really, lots of people do this.  However, in this case,
this "new person" on the list is making comments defending a
position and making comments like "you lie..." etc.  The
real problem is this new person is defending the position that someone
on the list can not get anyone else to agree to - and several of us are
fairly sure that the "new person" is indeed the same person who
had made the original position statement.

Has anyone else run into this on their
list?  If so, how did you handle it?  You can't come out on the
list and say "hm, Mr. so and so, are you really who you say your are
or are you an alias for ....."  This one is tricky and this person
is now really causing the list to turn into a ugly and nasty mess.  Before
I do what I have planned, I wanted to poll the other chairs first.  Don't
you just love this non-paying stress jobs....8-( 
___________________
Patricia Egen Consulting
www.egenconsulting.com
423-875-2652