I am sorry I did not see this issue before, I guess it came up while I was away.
I can offer this service if it is needed, on a limited and a case by case basis.
To the OP, you can of course dress the weld you have been left with to improve its cosmetic appearance, however it will be difficult to work being Titanium.
To REKIBorter, you mentioned the weld penetrated all the way into the BB area, was it a full penetration keyhole weld? Is there any chance of a shot of the underbead?
Can either the OP or REKIBorter tell me anything about the parameters or set up your repairers used? e.g. was it Tig or PAW or..., what shielding gas was used, filler wire or autogenous welds, etc, etc...
Cheers