I don't think the claim that its nuclear program was the subject of deliberate sabotage is far-fetched, considering that they've also had assassinated civilian scientists. This also jibes with the prior reports of sabotage, including the report that the US sent fake nuclear diagrams to Iran which were discovered by the Iranians.
Now, imagine if the tables were turned and Iran was caught trying to sabotage a US nuclear reactor. We would be hearing all about how them "evul muslims" don't care about human life and are willing to cause a nuclear catastrophe onto civilians. But when the US does it to Iran, it just goes by without causing a ripple.