Yes. You can move the recaptcha validation above the webassist server validation and use it to set a variable that you can then validate using the server validation.
To tie it to the jquery you need to give an id to the validation error message that is: id="[formelementid]_ServerError"
Replacing the [formelementid] portion with the id of the form element you want the error message tied to.
This is something I could help with in a premier support ticket.