Maybe they are just behaving responsibly and not getting peoples hopes up. Yeah right. Waiting to see whether Tiger do them any damage? As if they would give a toss about stopping the interviewing process on that basis, seeing as you pay to attend the interview anyway. Or maybe as you suggest, the training pipeline is blocked. Quite likely.
Whatever, if they don't want your application right now, they don't want it. The goalposts are constantly moving, and it's not over yet, so watch the website and wait. And if you get a better offer than no offer, take it.