As far as I can see, it was after his usual failed attempt at argument for his God and the existence of a soul, that Alan predictably turned to supposed miracles and various personal statements of belief to support his case. He normally does this by suggesting that such hearsay accounts are 'interesting' or that such selective anecdotal accounts bear witness to the 'truth' as he sees it.
After attending an alpha course many years ago, one thing that I regularly heard were the no doubt heartfelt stories of certain people there of how they had come to God, usually during a period of great stress and pain in their lives. I could empathise with their distress but, as some sort of evidence for the actual existence of their God, their declarations were empty and useless.
For the purposes of this post, I actually listened to Sam Shamoun’s testimony, which Alan linked to. It reminded me of the testimonies at that Alpha course. Obviously it affected him, but I didn't find it particularly interesting or particularly informative. As evidence it was totally useless. Consequentially I see no reason to waste my time on looking at Alan's other You tube links.