No, you cannot convert a concatenated RDF meta into a striped meta directly. You cannot modify the meta configuration of a device while there is an SRDF relationship present.  So in order to do this, you would need to do the following:  Unfortuantely this will require a full sync from R1 > R2...but because of this, you really don't need to use a BCV and the PROTECT_DATA option on the R2 side since it'll be fully re-established with the R1.  Hope this helps.
Can anyone advise if a concatenated R1 meta can be converted to a striped meta while it is synchronously replicating to its R2 counterpart? If not, can you enumerate the steps for this type of conversion? This task involves 2 x Vmax boxes, both running 5875 code. Thanks.
Convert concatenated R1 meta to striped while replication is active