Looking at the rules, it looks to me like the ruling has to be "fighting" to cause an ejection.
A single technical foul does not result in ejection. The second one does. So that can't be it.
Intentional technical fouls by the way are dead-ball only fouls (Rule 10, Sec 15) so it's not that either.
A flagrant contact technical foul (Rule 10, Sec 13, Art 3) is for "severely or excessively contacting an opponent when the ball is dead."
So that's not it. Other than fighting, that's the only contact-oriented flagrant foul rule I can find. The other flagrant foul rules are all non-contact fouls.
Ok so it's gotta be fighting. Let's look at the rules.
Section 17. Fighting
Art. 1. Fighting, as defined in Rule 4-23, includes, but is not limited to:
a. An attempt to strike an opponent with the arms, hands, legs or feet.
b. An attempt to punch or kick an opponent, regardless of whether
contact is made.
c. An attempt to instigate a fight by committing an unsportsmanlike act toward an opponent that causes the opponent to retaliate by fighting.
As determined by the officials, fighting is a flagrant foul and can be either
personal (during a live ball) or technical (during a dead ball).
So they've obviously ruled that he attempted to strike an opponent ... etc. Note the rule obviously requires intent. It does not allow a "hard foul" without intent to count as fighting.
Penalties (Sec 19):
Art. 2. The first time an individual participates in a fight during the season (including exhibition games), the individual shall be suspended from
participating in the team’s next regular-season game (not an exhibition
contest), including tournament competition.
Art. 3. When an individual participates in a second fight, that individual
shall be suspended for the remainder of the season, including tournament
competition.
Art. 6. Any team member or other bench personnel under suspension
for fighting shall not be in the team’s bench area.
And most importantly:
Art. 8. After a game, conference offices or the assigning authority may correct an error in who was involved in a fight but cannot change an
official’s ruling that a fight took place or lessen the severity of the penalty.
So G is gonna get screwed.