Sorry, rather than repost the same issue I'm going to hijack your thread a little.
For me this started after the august 1st update., prior to that I could smoothly skate around on icepath, it felt awesome.
To my eye it looks like prediction errors(in source prediction errors happen when client movement differs from server). I haven't yet remembered to mess with cl_showerrors to check for that though. I will post back when I do.
I attached an example clip that showcases it a bit. I thought maybe it was ping related, however, they rolled out new servers which I have 40 ping to, and the issue still happens. It really feels like some kind of prediction error, happens a lot when turning too.
I will post more clips and examples to hopefully help as I grab them. It happens every single time I use it in some form pretty much.