Avoid playing forte even at slow tempo, practice the entire passage softly. This will help you getting too caried away with emotional excitement and focus your attention to your technique and any unnecessary muscle tension than may arise. My teacher suggested: when playing it slow, play it like a nocturne.
My teacher will be so disappointed from you if she heard that Her point is that you must be familiar with all sforzandos and accents in the music while u r practicing it slowly. Take for example, the revolutionary etude if practiced at a slow speed and played like a nocturne will take you a lot of time to get it right with the intedned - mood.
And nocturnes don't have sforzandos or accents? The point is to always make it musical, and not just an excercise - sforzandos and accents included.Certainly any piece has a perscribed mood or feel that is required of it. But if one were to always play the piece exactly the same way, one would never discover new possibilities to interpretation. Sometimes playing a piece with alternate moods or a mood that is intentionally "wrong" will lead you to discover new ways of playing passages and lead to solutions for the final "correct" interpretation. Taking the Revolutionary Etude and playing it as a nocturne will help you see its compositional structure and you may soon find out it has much in common with a nocturne - with the exception of tempo. In fact in one of my university composition courses we studied the Revolutionary Etude as we were learning to write nocturnes (or accompanied melodies).