There are two possible reasons for this usage:
In the context of exceptions, the control moves to the calling function/method, and this call hierarchy is typically visualized with the main method on top and method calls forming a hierarchy downwards, with a decreasing level of abstractions. In this hierarchy, an exception moves upwards.
The actual program stack in a normal x86 application is inverted, i.e. it grows downwards. The PUSH / PUSHW / PUSHD machine code instructions decrease the stack pointer. Other architectures may share this model.
