As of the shared details I suspect that the integration of API tests to be executed within a web test
seems to suit your scenario. This feature was introduced with our latest R2 official release which trial version could be downloaded here
This could be helpful for you if the application under test has web service exposed which could be used to request a user to be deleted so if you will need further assistance on the topic I would like to kindly ask for further details about how the page you are automating is built - what is the procedure you would like to execute at the end of each test, what is the database you would like to data bind, etc.
I hope the details will be helpful to you. Though let me know if you need further guidance on the case! Thanks!