I tried to not state a position on that, being merely an informational post.
However, since you ask, I'm kind of ambivalent about it since 8A is a little ambiguous. Were I to defend the $5 mil, I would rely on this from the cited article:
QUOTE
Instead, “[t]he only arguable substantive limitation of the Bail Clause is that the government’s proposed conditions of release or detention not be ‘excessive’ in light of the perceived evil.”23 “Detention prior to trial of arrestees charged with serious felonies who are found after an adversary hearing to pose a threat to the safety of individuals or to the community which no condition of release can dispel” satisfies this requirement.2
...
To challenge bail as excessive, one must move for a reduction, and, if that motion is denied, appeal to the Court of Appeals, and, if unsuccessful, appeal to the Supreme Court Justice sitting for that circuit.
op cit, emphasis mine
END QUOTE
I'm concerned that abuse of bail can be used as a political weapon, but on the other hand, I understand the provisions for meeting the government's interest in shielding the population from this kind of previously-demonstrated dangerous behavior.
If it's "excessive," let him appeal it.
If some organization or person actually posts that amount, if I were them, I'd keep pretty darned close track of him after his release under that bail. To the point of effectively keeping him a "private" prisoner.
Terry, 230RN