Does it mean there was an outage, a service interruption, or the whole site went down and had to be resurrected?
There are so many moving parts here between the federal site and all the interfaces to state exchanges, it's hard to say who or what might have been the problem at that moment.
Seblojevich may have been making a misleading but technically true statement. She could say that the meaning of "is" is that the site has never completely blown up, it was just up and unusuable. It was turned on, but broken. Her statement is really only verifiably false if the entire thing is down, even if all you could do was get to the home page to see the Glitch Girl