Act 4 - random guy pulls of faustus' leg!!!!!! and then it grows back? what?

so just read act 4 (sort of) and am now seriously confused. There's a horse thats not really a horse but is actually a bottle of hay, Faustus gets his leg pulled off but is okay and suddenly has a leg again, and theres a final pointless scene about some grapes.

So this blog's going to be rubbish but whatever

How has Faustus Fallen Further ?

• less ambitious - we definitely see a massive decrease in Faustus' ambition (although this is really more apparent in Act 3). When we compare Faustus' original goal - to become a powerful magician and control the world - to what he's settled for now -"fame spread forth in every land"- it seems as if Faustus isn't really that bothered about power anymore and just wants to be famous. This is a bit weird, as Faustus sold his soul for these amazing magical abilities, and now doesn't care about them anymore. I think this could be Mephistopheles' influence, who in act 3 was discouraging Faustus' ambition.
• Relies on Mephs for everything - Faustus doesn;t do any magic throughout Act 4 but just lets Mephs do everything for him, like fetch the dead princes and find some grapes. This shows how he's either not bothered about doing magic anymore or has forgotten how to do it, leaving him reliant on Mephistopheles. Also when Faustus gets his leg pulled off he shouts to Meph for help "Help, Mephistopheles!". Although that is kind of understandable because he has just lost a leg.