That official really shouldn't be permitted to officiate any more. I hope they have some review process to deal with incompetence like that. The Saints call was worse a year or so ago, but this one really ranks right up there.
I've officiated at national meets in which quick decisions on moving action have to be made all the time, and I understand close situations and what a bad call can do. I also understand that spectators cannot always see what the official can see. But that wasn't the case here. The cameras seem to have caught it all. In fact, it is really hard to see anything close to interference.