I've seen the videos previously as well. At roughly 2 minutes into video 1, Jowenko proclaims that, if the building fell on Sept 11, then the charges had to be placed very quickly on that day.
About 4 minutes in, Jowenko is clear that the building did not fall cleanly as if the 'heart' had been destroyed by cutter charges. He seems very skeptical, when they look at the debris pile - 'this building was not demolished' 'is that building 7?'
So it may very well be that he can tell by looking at the debris that it wasn't cd, but the truther steers him away from that conclusion - I guess the debris was well outside WTC 7's footprint and Jowenko immediately recognizes that problem.
About 6' 'thirty or forty men' would be needed to do it!
So his theory relies on a large team of demolitions people going in...ON 9/11, while the building was on fire, and placing det cord, boosters, cutting charges.
riiiiiiight. This scenario is just not plausible, according to Jowenko's own words. Even he seems very confused about it, and complains about the lack of photographs.
But with sufficient quote mining, you can make it look like he supports truther cd theories........