Nice bit of shameless self promotion there Oluf......
Thank you, also, for pointing out what "Engine anti-ice" is, as many of the airline professionals and the AAIB would OBVIOUSLY not have a clue as to what causes it or how to look for traces of it after an accident!
Just because you can't find any ice in the engine doesn't mean you can't establish an icing condition using collected data!
"that caused the hesitation" - there was no hestitation, the engine was completely unresponsive and continued running at idle until impact.