Must send in recommendations now. The sooner your application is complete, the easier it is for them to decide on whether or not you will get an interview. Plus, it doesn't hurt to send them your recommendations more than once if you aren't sure. However, they still offer interviews to applicants who don't send in their DO recommendations. At the interview, you can check personally with the director to see if your application package is completed or not.
On a side note, the receptionist over the phones may not sound nice, but in person, everyone working there is very nice. I had the same impression when I first called to check on my recommendation status and was suprised when I met them in person.
However, Lions Pride is right... the lady working at the financial aid is .. oooohhhh.... watch out.. she was rude to my friend and I, and many others that I have spoken with. But that doesn't compare to the test proctors at the anatomy written exams. heh..