The Paralympic games are for people who are physically challenged. For an able-bodied person to pretend to be disabled in order to compete in these games was highly unethical. Moreover, the able-bodied athlete's participation most likely denied a disabled athlete a chance to compete in the games. It was more than justified that the Spanish NT was found guilty of fraud.
Yes, the penalties incurred for this offense were stiff enough. The Spanish NT incurred fines from Madrid, which were justified. Also, medal disqualification was appropriate. I suppose a bit more public embarrassment and shame would be appropriate for this offense. But nonetheless, the penalty for this offensive act was just.
The person responsible for this fraudulent act was merely removed of his position and given a relatively small fine. This case goes way beyond simply breaking the rules, it brings into question morality, as well. Maybe if incarceration were included in his conviction, it would send a sign to others and prevent such crimes in the future.
There is an incredible amount of fraud that exists in Olympic sports. It exists in the Olympics and the Paralympics. The reason that people continue to try to cheat is that they are seldom caught. If they are caught, they only receive a slap on the wrist. It's more important to send a message about sport with a harsh punishment.