Thought it was "what a terrific way to go to a six" TBH, but I've heard commentators muddle words plenty of times before now. Most of them just don't happen to come on the delivery where one of the most famous innings' in history reached the most notable milestone within it.
As I say, I've heard Laker only in hindsight and on highlights packages, but he's just seemed to be one of those always-there-and-always-essentials to me. Maybe my view would be different had I been there at the time. Remember, though, that I can tolerate the Willises, Allotts, Bothams, Lloyds, etc. that so many people hate. I don't even mind Charles Colville so long as he sticks to "welcome along" and doesn't start trying to venture into which players are good and which players aren't.
For me, TV commentary is just something in which there's very little mileage. Precious rare is the situation where your words can offer viewers something they haven't just seen. "Great shot, it was full, and he was right onto it" - yep, we've just seen that, you don't actually have to tell us. But you're paid to do so, so I kinda understand your plight. Just sitting there saying nothing isn't quite justifying your producers' outgoings.