Throw-in Reset

[Babyface]

Situation: After timeout official fails to designate spot for throw in. Official hands ball to Thrower A1 which he/she proceeds to run the endline. Official sounds whistle and basiclly gives team A a mulligan and tells the thrower that it is a spot throw in. Is the official correct? I tend to think so because the Official's manual 2.2.2 A.2 states the "The spot should be designated by the administering official." Is this similar to when the official announces to the players during a free throw "1" or "2" shots or even fails to tell them?