I don't have the specifics, but as I recall they were more aggressive (damaging/lethal) techniques.
However, even with what was left in, I will never look at Tai Chi the same way again. Those slow movements at full speed were some effective throws and takedowns.
Now, since Tai Chi is all positioning and frame/structure leverage rather than muscle, it would be harder for most people to pull the techniques off in an adrenaline charged situation.. but that is where years of practice come in, I guess.
I'm also lucky enough where my Sigun is Bow Sim Mark, so my Sifu has very strong roots. He makes crazy stuff look easy.