Self destruct

According to yesterday's Herald, the Iranians are refusing to return the top secret portable computer systems which form the Xeres network. This network is "mission essential" and Xeres is "top of the range" kit.

Anyone know why they didn't just throw the computer overboard when they were captured? Instead, the Iranian are reverse engineering the secrets out of it.

So, not content with allowing themselves to be captured due to inadequate military cover; losing top-secret equipment; then cracking under the vicious torture of being called "Mr Bean" and having one's ears flicked; the returnees are hailed as heroes and allowed to sell their stories to the press. What is going on?