I have a host in a 6 node cluster that I put into maintenance mode. In the process of the Virtual Machines being vmotioned off the box, one of the vm's has gone into (inaccessible) mode. When I look at the VM in the web client it says that it is now on one of the hosts that isn't in maintenance mode, however it is now powered off, and (inaccessible). Everything from the storage side looks fine.
This is all on ESXi 5.5 U1 hosts, View 5.3.