History says wait two years
As that's how long it usually takes corporations that've been DDoSed to admit that they were hacked under cover of the "chaff barrage". (Hi Sony!)
"At worst it is a temporary inconvenience to users of our website,"
No, that's the best case scenario. Somebody'd better be checking system logs very closely right now. Odds are someone got in, and if they were clever, used the website as a door to "secure" servers.