SuStel:

romuluSnganpu'mo' latlh DuH luHutlh romuluSngan.

hmm.. Daj, 'a qay'law' vay';

jatlh mu'tlhegh wa'DIch: "the romulans caused themselves to lack any
other options". mu'tlheghvam wInuDjaj: wa' ghom tu'lu', 'op
romuluSngan yugh ghomvam, 'ej vangmo' ghomvam romuluSnganpu', tagha'
latlh DuHmey HutlhchoH ghomvam romuluSnganpu'.

*shrug* Could it be interpreted as two distinct groups of Romulans? In isolation, sure. In context, probably not. If you're talking about a story in which a group of Romulans did this, then did that, then squandered their remaining alternatives, if I say romuluSnganpu'mo' latlh DuH luHutlh romuluSngan, it's pretty clear that the first and last instance of the word refer to the same group. If you still can't get past that, you can add -vam to the second instance.

Your use of ghomvam romuluSnganpu' doesn't make sense. Do you mean romuluSngan ghomvam This group of Romulans?

'ej DaH {romuluSnganpu'mo' latlh DuH luHutlh romuluSngan} mu'tlhegh
wInuDjaj:

I believe you are misusing -jaj. It's not used to suggest a course of action; it's used to express a wish or desire. DaH mu'tlhegh wInuDjaj means Now may it be that we examine the sentence.

Instead, you should just use an indicative or imperative sentence. DaH mu'tlhegh wInuD Now we examine the sentence (Cf. DaH matlhutlh Let's go get a drink, Power Klingon) or DaH mu'tlhegh yInuD Now examine the sentence.

mu'tlheghvam vIlaDtaHvIS, cha' yajmeH DuH vItu':

DuH wa': wa' romuluSngan ghom tu'lu'.
DuH cha': cha' romuluSngan ghom tu'lu'.

ghaytan qaSbogh DuH 'ang mu'tlheghvam ngaSbogh lut'e' 'e' vIyaj. 'a
law'bogh yajmeH DuH vIjunmeH, bI'reS {-'eghmoH} lo' vIqelpu'.

I know you WANT to talk about -'egh + -moH, but I believe you've exhausted the available information. You can do it easily without an object: jIquv'eghmoH I honor myself. There is only slim evidence that you can do it with an object, and exactly how that works is unclear, assuming it's not an error in the first place. You are looking for a way to justify what you want it to mean rather than looking to see whether it actually means that.

Having run out of evidence to examine, and finding that evidence to be insufficient to draw any conclusions, I advocate assuming that it DOESN'T work and translating according to that assumption. My translation follows that line of thought. If further evidence comes to light later, we can reevaluate.

-- 
SuStel
http://trimboli.name