Create a unit on the server side with an animation of unit1 playmove "amovpercmstpsnonwnondnon_amovpercmstpssurwnondnon"; and unit1 disableAI "MOVE";
Create an addaction that launches a script to change the unit the addaction is tied to back to default animation. In the addaction script have it change the unit using [_host] joinsilent (group _caller); _host enableAI "Move"; _host switchmove ""; or _host playMove "";. Neither switchmove nor playmove will sync with other players.