Truncating the event logs is what the guys offering help mean. You truncate the content of the logs out to a file which shrinks your actual SQL log files. You can use these truncated files and replay them to repopulate the event logs.
What we do is truncate the logs every 15 mins. We also backup the SQL in full mode to a .bak file. Each morning we then backup the .bak file and the truncated logs to tape and delete them from the disk
By truncating your logs like this you end up with a max of 15 mins of data loss in your SQL
We also have our SQL clustered and we can fail between clusters and not have any outage on our EV or SQL
If you are having issues then maybe there is something wrong with the way you clustered your SQL