appu: I know what you mean. Understood. On top of that, personally for me, it is not a big deal at all. This is a convention anyway. Layam wise, he was right on target, his eduppu was correct with respect to the beat. It is just that it was wrt to the prior beat. If he had continued and everyone adjusted to it, nothing would have been lost, it just means resetting the avarthanam beginning. Had the mridangist played a theermanam then it is a different matter, it makes sense to strictly obey the beginning of the avarthanam. I realize this is a radical and liberal position to take but I do not see a huge laya violation if someone does that.
In fact, I find the awkward and unnatural pause waiting around for a complete avarthanam a bit annoying. This sometimes happens when the artist misses the eduppu ( especially with the 1.5 desAdi eduppu ). Then they have to wait for the whole avarthanam to finish to take that back up. If the mridangist is just playing regular strokes rather than a micro-korvai-like theermanam, someone should start a new trend whereby the artist chooses to reset the thala avarthanam with some kriya so everyone adjusts. This can be done at the transition point between P and AP and between P and C. We will call it emotional rhythm. Who knows, it may actually sound quite dynamic and provide for a little bit of variety.