On 1 - This is a critical bug that we acknowledged and are waiting for the fix to get deployed. It's not a privacy issue (the badge pages for any users are public) - rather it's a super annoying issue where your local browser cache for the site appears to get corrupted and as a result you get redirected/misdirected to another place.
You are right in that deleting your whole browser cache for an issue just with our website is silly. It's sufficient to just delete the cache for forums.ea.com. You can find steps for Chrome here, and for other browsers here.
On 2 - That was an outage/incident. Unfortunately it took way longer to get fixed then what's acceptable and we have raised our concerns with our platform host to ensure less incidents and faster resolution.