No, I don't pronounce the "t" in either "often" or "soften". The "t" is not pronounced in "stle" endings either: castle, trestle, thistle, bustle, wrestle, ...
I always thought that the /t/ in 'often' was hypercorrection, but Webster's Collegiate lists it as 'a variant in educated speech which is considered unacceptable by some'-- what an unusual situation!