Add node to Islon cluster with smartfail already progress?

Hello,

Does any of you know if a node can be joined to an Isilon cluster that already has a smartfail operation in progress?

We have to perform a test at a customer (on his behalf):

     a) Remove a node

     b) Some read/write tests

     c) Add the node back

I want to know if we can process with adding the node back, before the smartfail process (from step a) has finished.

We are running latest 7.2.

Thanks

Francis