Board Thread:The Flash episode discussions/@comment-9346948-20150429010150/@comment-216.159.119.100-20150429134002

Yes when future Barry went back in time to save his mom he knew that his mom was murdered thats why he went back in the first place. The reason Eobard was stuck was because he ran out of speed force. But when future Barry went back to save his mom he didn't run out of speed force because he is the Flash. So he wasn't stuck in the past like Eobard was.