Is it possible to disable an AX4 NIC interface on a SP?

We have an AX4 with dual SP using iSCSI.  NIC 0 is on one switch and NIC 1 is on another as recommended by EMC.  Each switch w/ its own subnet.

We are looking at migrating to new switches so I was trying to find a way to shutdown a NIC so the iSCSI traffic can automatically fail over to the other network. So if I shutdown NIC0 of SPA and SPB, all traffic will route to their NIC1s.  Then I can plug in NIC0 to a new switch. Is this possible?

I know I can just pull the cable but I am not sure if thats an elegant way.  And currently we cannot afford to shutdown all of our hosts attached to the SAN.

Thanks!