I guess we can call this unfortunate, overenthusiastic, whatever.
Any public relations man was overenthusiastic by nature, in Randolph's estimation.
I've been hearing some disquieting reports about some of the overenthusiastic bullyboys on your team.
For some reason or other Ruskin was not overenthusiastic over Amiens.
c.1600, "pertaining to possession by a deity," from Greek enthousiastikos "inspired," from enthousiazein (see enthusiasm). Meaning "pertaining to irrational delusion in religion" is from 1690s. The main modern sense, in reference to feelings or persons, "intensely eager, rapturous," is from late 18c. Related: Enthusiastically.