Well, for the first few games this season Marcus was out with that injury, I did notice when he finally was able to play he seemed to take harder shots than I was used to him taking, long treys with defenders on him hard. He hit a lot of them that first few games back but to me they were long and rushed, I noted to myself can he really hit those kind of shots now cause that is the kind of shots Curry takes. He started missing them, taking bad shots usually does end up that way. But I think missing those got in his head a little bit. His shot was rushed and he was falling away a lot in order to get it off and not get blocked.
Keep in mind, no team, even as deep in that slump as Marcus was in, no team gave him easy looks, they knew, if Marcus gets hot he can kill it so they continued to harass him all over the court, you in a slump, it is in your head, and the defenses still key on stopping you from getting clean looks. It all added up to the results we saw.
The other thing I would add is that Marcus playing at the 2 was typically guarded by longer defenders than he was when he was at the PG position. When he was hot in past seasons it didn't matter who was guarding him but when you are in a slump a longer defender on you is just another problem to over come.