If Tom Elliot is serious about taking the UUP forward then he needs to speak to ALL of his members, particularly his elected ones, and find out what they feel needs to happen. The onus is on him, not them. While things are still so fractured in the party and cabals are still so prevalent, those who feel left out and ostracised will continue to speak out. Tom Elliot cannot solve that problem by then attacking them via the same medium. Instead of getting involved with in a tit for tat spat played out in the media, Tom should speak privately to the individuals involved, found out their concerns and if possible address them and if not, arrange for the member and the party to part company amicably. By doing this he can leave the member room to make amends on their own terms in the media or prove to the rest of the public that when differences are irreconcilable that the party can be mature enough to accept that and wish their colleagues all the best.
This approach shows to all that when there is a problem the Party Executive are prepared to listen and provide solutions. Those who choose to vent in the media rather than make use of the party structure to air grievances will come across as the bad guys rather than the Party. If Tom has genuinely done all he can, he may find the media treat him a little differently.