Hi, I was wondering if someone could help...

I Have a 2002 daihatsu sirion 1.3 4wd and was trying to change the alternator. I got to it, managed to get the top bolt out disconnected El connector and terminal lug. However, after removing the nut from the lower bolt I tried to slide it out and the wheel arch stops me fully withdrawing it. Could someone just tell me I'm an idiot and there really is an obvious way to get the bolt out without cutting the wheel arch?

Many thanks in advance