ME1 Ilos MAKO bug
So I'm almost done with ME1 LE, and I'm on Ilos doing the trench run. However, at one point there is a massive ledge that I dropped down on foot (I thought I couldn't bring the MAKO). I thought it didn't matter since I could easily fight my way through the geth on foot, but now I just had the cutscene with the geth attacking the citadel and I get the 40 second timer to get to the relay. This is literally impossible without the MAKO. So, is my entire play through of ME1 wasted, or is there some way to get past this point without the MAKO (or some way to get the MAKO back)? I already tried backtracking just in case, but there is an invisible wall halfway through the trench so I can't even get back to ledge.
Please help, as this is completely game breaking and it's kinda heartbreaking that it's happening right at the end.