Won't bouncing the switchport cancel the dynamically modified VLAN ?
From the following information captured from the switch it appears the vlan enforcement only applies to the specific device, and not to the switch port itself. You can see the first device is in VLAN 409 and the second device in 700.
ARUBATESTSW01(eth-1)# sh port-acc cli
Port Access Client Status
Port Client Name MAC Address IP Address User Role Type VLAN
----- ------------- ----------------- --------------- ----------------- ----- -------------------------------------------------------
1 host/L6114... 705a0f-83503c 10.40.129.109 8021X 409, 209
1 203a0782af31 203a07-82af31 n/a MAC 701, 700