I'm really confused by the whole "crank wouldn't come off, so they had to hacksaw the spindle" thing.
I can't see any way that that operation happens that doesn't leave the cut-off crankarm end of the (steel) spindle still un-removably stuck into the inside of whichever (aluminum) crankarm they couldn't remove.
More to the point, I cannot imagine any such scenario that would not end with, "So, I need a new crankset and bottom bracket." And, since cranksets and bottom brackets are almost always bought together, I would just go ahead and assume that any parts not destroyed by the removal aren't going to be reusable.
Which, really, is fine. That looks to me like an entry-level Suntour crank. Either Blaze or Edge... I forget which one had which finish on it... One was silver and the other was grey. Anyway, not worth any real effort to save, and I say that as a Suntour fan.
--Shannon