When the Royal Shakespeare Company severed its ties with London’s Barbican Arts Centre last year, both sides insisted that the split was for the best. The RSC would be able to focus more intently on its core mission without having to work around the Barbican’s schedule, and the Barbican would be free to become a center for international touring theatre. But a year later, neither of the divorcees appears to be doing all that well, and speculation has begun about the potential for an eventual reconciliation.