Made it work :)

RIGS/discourse/pipeline.py

@@ -0,0 +1,62 @@
+from django.core.urlresolvers import reverse
+from django.contrib.auth import REDIRECT_FIELD_NAME
+from django.shortcuts import render_to_response
+from django.core.exceptions import ValidationError
+
+from social.pipeline.partial import partial
+
+from RIGS.models import Profile
+from RIGS import forms
+
+
+class SocialRegisterForm(forms.ProfileRegistrationFormUniqueEmail):
+    def __init__(self, *args, **kwargs):
+        super(SocialRegisterForm, self).__init__(*args, **kwargs)
+        self.fields.pop('password1')
+        self.fields.pop('password2')
+        self.fields.pop('captcha')
+
+        self.fields['email'].widget.attrs['readonly'] = True
+
+    def clean_email(self):
+        initial = getattr(self, 'initial', None)
+        if(initial['email'] != self.cleaned_data['email']):
+            raise ValidationError("You cannot change the email")
+
+        return initial['email']
+
+
+@partial
+def new_connection(backend, details, response, user=None, is_new=False, social=None, request=None, *args, **kwargs):
+    if social is not None:
+        return
+
+    data = backend.strategy.request_data()
+
+    if data.get('UseCurrentAccount') is not None:
+        return
+
+    alreadyLoggedIn = user is not None
+
+    context = {
+        'details': details,
+        'alreadyLoggedIn': alreadyLoggedIn,
+        'loggedInUser': user,
+    }
+
+    if not alreadyLoggedIn:
+        completeUrl = reverse('social:complete', kwargs={'backend': backend.name})
+        context['login_url'] = "{0}?{1}={2}".format(reverse('login'), REDIRECT_FIELD_NAME, completeUrl)
+
+        if data.get('username') is None:
+            form = SocialRegisterForm(initial=details)
+        else:
+            form = SocialRegisterForm(data, initial=details)
+
+        if form.is_valid():
+            new_user = Profile.objects.create_user(**form.cleaned_data)
+            return {'user': new_user}
+
+        context['form'] = form
+
+    return render_to_response('RIGS/social-associate.html', context)