Relegated Norwich were down to nine men at half time following two straight red cards, before Chris Wood's overhead kick registered his 13th goal of the campaign to put the visitors ahead.
A madcap own goal by Ben Godfrey deep into the second half then sealed the win, which equals the club's number of away wins and record points tally in the Premier League era.
“It was a very strange evening. Bizarre, even," admitted Dyche.
“I've only had that once before (playing) against nine men at Chelsea, but they bombarded us from everywhere.
"Today was interesting because it's the first time I've seen a team go two banks of four and no striker.
“It felt like a sort of training game. I know they have had their challenges this season and there was no crowd, so maybe the game was always going to feel strange.
“It's difficult to break that down and that made it awkward to get a foothold and control the game on terms of goals and chances.
“We had little moments, but other than Chris's amazing chance, early in the second half, we huffed and puffed a bit.
“I'm probably being a bit critical though, because we've just got another win and another clean sheet and our run since Christmas has been phenomenal and even better since lockdown.
“So, I'm nitpicking really about a team of mine that has just won another Premier League game."