Yeah, that was pretty cool. Freak out and get stunk out. Stay calm and film on. Nature's pretty cool as long as you respect it.
I've had a herd (Mom, dad and 3 juvi's) approach and go right by me as I'm taking trash out to the dumpster at my night job. They were going to check out under the bird feeder that hangs near the back door of the building (the door I use for trash). Looks much like that video with all the bouncing around but at the same time moving as one. My pics didn't come out too well as it was on the dark side of dusk and I didn't have my readers on so I couldn't adjust setting on my phone. Not a big deal as long as you remember not to make sudden movements or noises. I just speak softly to let them know I am around. Haven't seen them this winter but I'm sure they will be around come spring.
Pucker factor is high on that. Good thing he didn't have a dog with him...that could have gone all kinds of wrong.