There wound up being a hotfix that resolved this.  Support applied the hotfix to each Storage Processor and failover worked as expected.
I am trying to set a new VNXe3150.   What I'm trying to test at the moment is the ability of the VNXe to failover a storage server when all network connections to that storage server have been disabled.  To this point I've been unsuccessful.  I realize tha the beauty and true redundancy of Multipathing and Failover is gained when you use multiple switches, but I need someone to show me why the same things aren't possible with a single switch.  Here's our configuration that I'm testing with VNXe3150 with 2 Storage Processors each with the added 4 port I/O module.  I have eth10 and eth11 bonded together for the NFS Storage server. On each storage processor I have One NFS Storage server; and One ISCSI Storage Server configured with 2 IPs each in different subnets. This gives me a quantity of 2 NFS Storage Servers, and 2 ISCSI storage servers. eth10 and eth11 on SPA are tied together from the VNXe side as well as being in "PortChannel 1" eth10 and eth11 on SPB are tied together from the VNXe side as well as being in "PortChannel 2" eth12 on both SPs are in one vLAN while eth13 on both SPs is in the third vLAN There are 3 VLANS involved here, One for NFS, and 2 for ISCSI. All ports in this case are connected to the same Cisco 3560G switch. I'm doing all my failover testing by disabling ports on the switch  If I disable a port in either of the PortChannel groups I'm still able to ping the storage server as expected. If I disable both ports in an PortChannel Group the VNXe reports "traffic rerouted to peer SP port" but I'm still unable to ping the IP of the 'down' NFS storage server The same behavior is seen with the ISCSI storage server, if both eth12 and eth13 are disabled from the switch side a log entry is made but I'm not able to ping the 'down' IPs any more.  If I put a storage server into maintenance mode, the IPs that would have been hosted on that storage server still respond to Pings.  Am I missing something? Do I really have to have two switches to achieve what I'm looking for here.  I realize it's not protection against a switch failure but it is protection against multiple network cable failures. 
Multipath / Failover with single switch