If the article is correct (that this has been "discovered" rather than already known about, but not considered an issue until now), my suspicion is that they've

If the article is correct (that this has been "discovered" rather than already known about, but not considered an issue until now), my suspicion is that they've discovered that aspects of the satellite's systems are under ITAR control. ITAR (International Traffic in Arms Regulations) applies to almost everything space related that originates in the US, passes through the US, has input from US citizens or is produced by a US based company. It's very easy for something to become subject to ITAR, and once something is considered to be subject to ITAR it's practically impossible to undo. It's possible that they've recently done an audit on the systems used (which are numerous and sourced from hundreds, perhaps thousands of suppliers) and found that something which was previously considered to be ITAR free could actually be subject to ITAR. Violation of ITAR by a company can result in huge fines or trade sanctions, and the only way to avoid them is not operate at all in the US, or even deal with US companies. I'd imagine that the only people in the space business who don't care about ITAR are the Chinese and Russians.