GLBP caught up in the Broadcast Storm

We all know that broadcast storms can degrade network performance. I have seen one such case last week. A Unix guy complained that his server was losing connections. He showed logs from his server. There were flaps on his nics. The server is connected in a U shaped network which means he has two NICs in bonding and each of them is connected to a diffrent switch. I didn't find any issues on the access layer swithes. There were no logs, no errors on the interfaces, no CPU utilization, nothing! I logged into the gateway 6500 switches and found GLBP flaps for that particular VLAN. I checked the tracking interface which was fine. No other logs on the devices other than the continuous GLBP flaps. There were several vlan interfaces in there and the GLBP for them were fine. The issue resolved on its own( luckily). Later when I pulled SevOne report for that particular interface there was a high rise in the broadcast traffic on that VLAN and this was causing the issue. So how is the broadcast storm affecting GLBP? I guess the stom blocked/delayed the hello packets of GLBP causing continous failovers. Let me know if you have any thoughts on this