Unless you finance your account that way but that funds their account. Here is their opinion:
Thanks for calling OANDA.
With regard to your taste for your withdrawal technique. Please know as per OANDA coverages funds are returned as received, using the same method. Since you funded your account via wire, you can use wire for a withdrawal approach. We've made exceptions to you before to allow withdrawals via PayPal, however that is permitted for your account. We expect this reaction assists you with understanding why you need to use wire withdrawal as your method of choice to your withdrawals.