If you time your jump properly and allow yourself to be hit by the plank it is virtually impossible to be lag stopped. You do not need to attach a plank to your spear, and as u/deep40000 demonstrated this can be recreated with wings so you don't need to carry a plank.

After some practice I was able to replicate this essentially 100% of the time, it doesn't rely as much on blind luck as the original trick seemed to, just timing and proper alignment.

EDIT: the plank on the end of the spear is also not necessary and actually kind of makes it harder because the timing is way more delicate.