Pleasure
Yes you have to send it through VFS.
I almost made the same mistake but luckily I clicked on the link and realised I had to send it through vfs and also pay the transmission of passport fee and here in SA they provide the service of sending back your processed passport by courier at a fee so I paid both fees so find out if they provide the service and pay the prepaid return postage fees as well. I sent the proof of payment with passport, 2 photo's, annex A and I also sent them my proof of payment of the Right Of Permanent Residence Fee.
I would advise you to pay the RPRF if you haven't and include the receipt with your passport to avoid any delays.
Hope this helps. X