In my humble opinion --yes ---it was poor sportsmanship, the rules and allowances are strictly adhered to by a commitee, it was Pistorious's choice to wear the blades he did, the truth of the matter is, he just wasn't the best best on day, no matter what he or others think.
Every Para Olympian that performs on a stage as big as the Olympics deserves a medal, and whoever comes first ---second --third --on the day doesn't matter a jot really, the fact they trained and trained to take part is where medals should be granted.