The pair were cleared by South African judicial officer William Venter, who scarpered home as the furore continued.
That time the Lions persisted with the issue while the IRB alone, according to Pulver, decided to get involved in a repeat examination of Horwill's case.
Chief executive Brett Gosper, the president and legal officer of the IRB, had reviewed the decision of the judicial officer and chose to put it under repeat scrutiny.
Pulver approved of the independence of the system but was critical of the flawed and elongated process. He wanted the system changed to separate the judicial and administrative arms of the IRB to eliminate further cases of double jeopardy.
It is the second time Gosper has been involved in some public judicial outcry.
Last November, he tweeted about Adam Thomson's careless boot work on a Scottish opponent. He did not like the initial one-week suspension and wanted a review.
It was silly enough then for someone in his role to tweet about his displeasure with the decision and just as daft for the IRB to get involved again in Horwill's case. Rules, refereeing, judicial outcomes, penalties must have a global uniformity. The game is played at a fast clip, an attribute the IRB should aim for to quicken the speed of its administration.