One suggestion is to have a function for on submission that does an ajax call with the input text to another page that returns either true or false, based on a script that checks the value against your remote data.
I am not sure if there is a simpler way that you can force the input to be validated without an ajax call, perhaps you can load all the remote data into a json and then validate against the json on submission?
Thanks Morne, I was able to use the custom function to do the validation, the only issue is I have more than one of these controls, how can I have a custom validation for multiple controls using Kendo Validator.