Actually the Ref calls the TMM as well. Linesmen just inform them. As they do with the high stick missed and the DOG.
You are right... I just looked it up... they can almost call anything, but the only penalty they can
stop play for is TMM.
32.4 Reporting to Referee - The Linesman shall give to the Referees his interpretation of any incident that may have taken place during the game.
The Linesman may stop play and report what he witnessed to the Referees when:
(i) There are too many men on the ice
(ii) Articles are thrown on the ice from the players’ bench or penalty bench
(iii) When team personnel interfere with a game official
(iv) When a player who has lost or broken his stick receives one illegally
The Linesman must report upon completion of play, any circumstances pertaining to:
(i) Major penalties
(ii) Match penalties
(iii) Misconduct penalties
(iv) Game Misconduct penalties
(v) Abuse of Officials
(vi) Physical Abuse of Officials
(vii) Unsportsmanlike Conduct
(viii) Double-minor penalty when it is apparent that an injury has resulted from a high-stick that has gone undetected by the Referees
Should a Linesman witness a foul (above) committed by an attacking player or goalkeeper (undetected by the Referees) prior to the attacking team scoring a goal, the Linesman shall report what he witnessed to the Referees, the goal shall be disallowed and the appropriate penalty assessed.