This site allows you do download the strava data as a CRS (if you don't have premium)
This trick worked quite nicely for me, and the .CRS file I downloaded includes trackpoint data with timestamps. Unfortunately I only pulled one leg, the one which used to be at https://www.strava.com/activities/617306643.
Did others pull any of these legs as CRS files before they were deleted? The one I have has some definite anomalies but others seem like they were even more clear cut.