Remote Buddy doesn't make any difference between the type of 
connection between your iPhone and your Mac, though. The same 
Javascript code gets executed in Safari, the only difference is the 
connection speed.

The AJAX Remote's Camera and Trackpad module both base on its 
ImageStream class, which automatically adapts to the maximum bandwidth 
available. That means, it makes no assumptions about your connection 
speed and also won't flood your browser with requests that stack up 
because the connection speed is lower than a specific assumption. All 
code is really written with highly variable bandwidth and CPU power in 
mind.

Can you reliably reproduce this issue or does it only occur randomly?

I ask because my best guess is that - as the code that gets executed 
doesn't differ at all - you've experienced one of Safari's more or 
less random crashes.

In general, no Javascript, CSS or HTML code should be able to crash 
Safari in the first place. That any code - and especially *working* 
code, that even pays special attention to resource and bandwidth 
shortage - is even able to crash Mobile Safari is as annoying for you 
as it is for me.

Best regards, 
Felix