Concurrent WebSecurity.CreateUser and DbContext operations go into DTC

Question

I recently ran into a problem trying to complete some transaction related operations of both WebSecurity and DbContext.

In my ASP.NET MVC 4 application, I am trying to register a new user this way:

var transactionOptions = new TransactionOptions
{
    IsolationLevel = IsolationLevel.ReadCommitted,
    Timeout = TransactionManager.MaximumTimeout
};
using (var transactionScope = new TransactionScope(TransactionScopeOption.Required, transactionOptions))
{
    var confirmationToken = WebSecurity.CreateUserAndAccount(
    vm.Email,
    vm.Password,
    new
    {
        AccountCreationDate = DateTime.Now,
        City = vm.City,
        (...)
    },
    true);

    Roles.AddUserToRole(vm.Email, "Client");

    // Some other job on DbContext in Repository
    var userRepository = new UserRepository();
    userRepository.AssignData(vm.Email);

    transactionScope.Complete();
}

code>

As you can see, I am trying to create a user account and membership, assign a role, and then do some additional things in Eb5 DbContext through the repository.

This code is wrapped in a try-catch block, which I am not here for brevity.

And here is my question: is it possible to wrap all these 3 calls to the database (via WebSecurity, Roles and Repository, respectively) using one transaction WITHOUT allowing its escalation to DTC?

I am using SQL Server 2012, one DB and the same connection string, if that helps.