Pretty sure you can. Just delay the input and do qcb=>ub+K and there you go. You can TK Leona's V-slasher as well as Kyo's Air Orichinagi so you definitely can do this.
EDIT:
If you look at today's Wednesday Brawl, TKO Supa tried a couple of times to do the same thing you were doing. He might have done it too late as it came out as jump B's, but still I can see it's being tried.
SUPER EDIT:
So, was in training mode with K' today.
Basically, he can't follow up his ein trigger into Second Shell (His launcher kick) unless you do C version Ein Trigger or d.B, qcf+P, f+D or st.C (1hit), qcf+P, f+D. That's not entirely accurate, but let me explain in that if he does C version Ein Trigger, you can't follow up anything either.
He's very meter dependent and he doesn't gain meter as fast as before. Outside of the corner, he only gains close to 40% meter for a regular BnB (or atleast anything you can do without meter. He can't link dp+C as far as I can tell with any combo starters without meter. This is a strange new K'.
There's plenty of other stuff you can do. If you TK his qcb+K so it's in the air, you can anywhere juggle off of a st.A. If you manage it, I'm pretty sure you could carry someone to the corner by doing standing A and that over and over again. That'd be a nice practice.