I thought this happened on the ground. APR will not activate with weight on wheel input (shutdown at the gate). Interesting theory though.
I have heard of the cable to the TL disconnecting. At an inappropriate power setting this could be very interesting.
As for a landing with one shutdown and one at full thrust, I don't think so. Interesting, but I don't think so. If it's true, it's ***kin' amazing.
Willie