Thanks to Ken at Fang’s Bites for providing me with this.  It’s a statement issued by TBS spokesperson Megan Bondi:

STATEMENT FROM TBS REGARDING ALCS GAME 6:

Two circuit breakers in our Atlanta transmission operations tripped causing the master router and its backup – which are necessary to transmit any incoming feed outbound – to shut down.  This impacted our live feed from being distributed to any of the other networks in the Turner portfolio and caused the delay in our coverage.  Both our primary and backup routers were impacted by this problem.  We apologize to baseball fans for this mishap that caused a delay in our coverage.