I was there Friday and can confirm that the leg burner climb is closed. I know this was the case on friday as I rode to the bottom of the leg burner climb and found it closed. Zorro was completely clear too.
I back tracked all the way back the way I came and rejoined the trail to do the Pendam loop.
To be honest the signage isn’t good. It said on the sign tree work would be finished on the 18/03. I think more effort could have been made to make people aware that the trail was still closed a week later (it was a sunny very busy bank holiday weekend and there were a lot of riders in NYA). I’m glad I wasn’t the only one to fall foul of the closure!! I did meet another group of riders who were about to start the Mark of Zorro too, just coming off the new bit of trail there.