Shades of Wu stle? In YCF's forms?
NO!!!!!!!!!!!!!! Surely not! I do that enough for everyone!
Seriously though. YCF and WCC studied and taught together for a long time. I have heard stories of the two of them doing push hands together for demonstrations.
Since at that time there was very little differentiation (is that a word? well, I guess it is now) between the "styles", I would imagine you very easily could be seeing "shades of Wu style" in his forms.
I would have to imagine that YCF would have picked up on some of these ideas and experimented with them while WCC was inventing his forms.
Just as I'm sure that Wu Chien Chuan would also have picked up some ideas from YCF and experimented with them.
Very interesting, but nothing outside the realm of possibility, surely.
I, myself, probably look quite a bit like that when I do Yang style.
I have one heck of a time putting my back foot at 45 degrees in "bow stance" because I've been placing it parallel for over fifteen years in Wu styles "archery stance".
One good reason for this. Because it works better for me that way.
I know, I know, it's not "proper Yang style form" and I do my utmost not to do it. However I haven't quite found the jing in the "bow stance" this way. Not all of it, anyway. I'm still working on it though.
Maybe he was experimenting with it to see how it worked at the time of these photos?
Maybe he just missed his foot placement this time?
I guess we'll never know.