Texture Pack Has Locked Me Out Of My Game

Hi,

I play on a Mac (On 1.8) and I recently downloaded a texture pack titles, "Intermacgod Realistic Pack" or such. I tried to apply it on a server. The game froze for about half a minute and then crashed, saying Minecraft ran out of memory. Now, every time I try to open Minecraft, my game crashes and I can't locate the texture pack file. Help!

Nik