A similar carding was handed down on Blues flanker Antonio Kiri Kiri during their loss to the Highlanders in Dunedin yesterday.
Ten minutes into the second half Kiri Kiri was given a yellow card after he tackled Lima Spopaga high, which turned out to be the turning point of the game.
Following their match in Melbourne last night, Higginbotham said that had been doing similar tackles for years.
"I was just going in for a tackle - a two man tackle, one bloke goes low, one goes high.
"We practise that in preseason, I've been doing it for 12 years," he said.
Former All Blacks hard man and new coach of the Reds, Brad Thorn, said it was a "big call" to send off his captain so early in the match.
Thorn would have been fuming after lock Lukhan Tui followed Higginbotham to the sidelines with a yellow card following a tip-tackle on Will Genia.
While down to 13 men, the Reds conceded three tries in the space of 10 minutes in the thrashing.