"Shall" is something that is required to be done. Being "subject to" a penalty does NOT lessen the requirement that (in this case) either expulsion or other discipline be levied.
In our case a person "Shall be" "subject to" either expulsion or other discipline. IMO
Brien

P.S. Jay...I'm going to be looking for a $5 El Rancho Vegas chip while at the convention (the mustard color- cord mold) Any ideas?