Tottenham took a giant step towards the last eight of the competition when they beat Inter 3-0 thanks to goals from Bale, Gylfi Sigurdsson, and Jan Vertonghen.
Bale performed superbly throughout the game, but the gloss was taken off his efforts slightly by a first half booking for diving.
Replays showed the 23-year-old, who caused Inter so many problems in the Champions League two seasons ago, went down easily under minimal pressure from Walter Gargano.
Villas-Boas shrugged off yet another Bale diving incident and even suggested he may have even considered asking the Wales international to collect a booking on purpose to clear his suspension out of the way for the latter stages.
"He is obviously a great miss but, to be fair, probably with this result we would have asked him to get the yellow card to be clean and ready for the last eight," he said.
Villas-Boas added: "It is a difficult decision for the ref. I won't build on that case. I don't want to go into that, we have a wonderful player to enjoy and it is ridiculous if we go on like that.