IO FENCING: 2/3 CPS working and network problem

Hello,

We have set up IO fencing by 3 CPS (3 different sites), and right now, because a hardware problem one CPS is out, so there are only 2 CPS working.

Next weekend, there will be a network cut-off for 5 minutes, where all the nodes (all clusters are 2-node based in 2 different sites) will not see each other. I tested the cut-off in an development environment and both nodes panic and reboot, because each node just could get one CPS. 

Is there any way to avoid using io fencing during these 5 minutes cut-off??