There is absolutely nothing experimental about any aspect of Weakness. If you really think so then you need to broaden your musical horizons a bit. It's just a bit of ambient noodling. And not a very interesting bit at that (certainly not when you take into account it's coming from gifted writers/musicians like Mikael and Steven). To me it just sounds like a "Well, we need something to fill up a few more minutes, let's just make something up on the spot so we can go home" kind of track. It's not unbearable, but also not interesting in any way. And I agree with Hypnos that Ending Credits should have been the end of the album. It sounds like a closer (both musically and the track title). Weakness is just an anti-climactic ending.