Why is Daniel sometimes able to be pushed around / pushed through walls by objects?

[ATDDFan]

Here's an example of what I'm talking about: https://www.youtube.com/watch?v=HC3cN2o8ZVs&t=223

Most of the time the box will hit Daniel's head and then stay suspended in the air, but sometimes Daniel is loaded in a state where objects slide off him, push him around and force him through barriers. The guy who made the linked video posted a reply that talks about it in response to the bottom comment.

Does anyone here know what causes this to happen? It would help save a good amount of time in speedruns if we were able to do it consistently.