Well, crm114 is long time abandonware upstream and according to the popularity contest not much popular in Debian. So I think it’s better to leave crmsh untouched and solve the problem on the crm114 side. Either by making it conflicting with crmsh or by renaming the binary to crm114. The latter could upset users because their copied example scripts with the original shebangs would stop working; maybe the conflict would be better then, I guess there is a good chance that nobody uses both crmsh and crm114 on the same system.
Regards, Milan