I'm not sure this has been resolved but the cause seems that the same user was still logging in to another machine when it attempted to login to this problematic machine.
The remote profile repository was locked by persona on another machine.
[0][04/24/2015 12:34:50:0119][CSyncEngine::RemoveFile ] Unable to remove file (32): \\?\UNC\fileserver\viewProfiles\XXXX.domain.V2\{d24f2895-651a-40cc-8e5c-c037b9994104}\lock.{d24f2895-651a-40cc-8e5c-c037b9994104}
Error code 32: ERROR_SHARING_VIOLATION: The process cannot access the file because it is being used by another process.
Thanks.
