First and foremost: This is not a spike; this is a meteor.
Secondly, Fly and I have been doing this for ages. It's nothing new. Most ICs don't do this unless they are trying to style because of how easy it is for characters to get out of.
This will work in Climber dittos in certain situations, esp. if you setup your grab as a lagless grab. With a dash dance desync, Nana ignores the initial grab (please note, jumping cancels her turning animation, so running grabs only work for this. JC Grabs will not work.) and will be free to do whatever action immediately. Admiral popularized this as the 'lagless wobble setup', but it can be applied to just about everything ICs can do off of a grab.
Please do not refer to this as the "brk spike". You did not come up with this, and the name for the technique is laughably inaccurate. This is just a f-throw into Nana fair. That's it. It's not a spike, it's not a crazy new technique. This is ICs bread and butter.
WilyAwsme
Whats the point if it can be meteor canceled every time?