If you open Wikipedia you find out that RAID100 is considered as nested RAID level. It is said that RAID 100 is a RAID0 built from RAID10 arrays. Thus it turns out that on-disk contents of RAID 100 will be exactly the same as in RAID 10.
So, it is possible to obtain RAID 0 from RAID 100 by removing one of the disks of each mirror set. From the RAID recovery point of view, RAID100 recovery just boils down to RAID0 recovery given that you are able to fetch a full set of RAID0 disks.
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