The rule doesn’t even need to be changed. A reasonable reading of it would allow them to do what they want on the issue. But they ought to have replaced the Democrat parliamentarian with one of their own, anyway. And even if the parliamentarian ruled against it, they could simply have Pence sit in and overrule. Dems da rules.
The GOPe is lying to us and to Trump, and so far Trump still seems deluded—thinking that the GOPe are his friends. I think he’ll figure it out, but I hope he does so soon.