Luckily the first time one of our ushers (6'4" 220 lbs.) went up to him and told him, "You will either eat it, right here and now or return it to me."
The second time, the Extraordinary minister would not allow him to leave where he was standing without putting it in his mouth.
In our parish, if you take it by hand you must put in it your mouth before leaving the priest. But if you deliberatly dry your mouth before reception you could still spit it out and do whatever.
Evil exists, I’m sure more bad things have to the Eucharist than anyone knows, Christ knows and I’m sure that He can deal with it.
We need to make sure that people are educated and if it is caught then it should never be ignored.