No, the trace is not usable on it's own, you need to correlate it with the ELF. And if you've built the engine as a dynamic plugin, then it won't even be in the ELF.
I suggest you rebuild ScummVM with the CGE engine as a static builtin. You can disable all other engines, but don't disable support for dynamic plugins completely, since that may lead to a link error. Then, when you get the crash the next time, you can use sh-elf-addr2line with the ELF and the exception address to find where in the engine the problem is.